Veranstaltungsarchiv

03.12.2021, 11:00  –  2.22 und online
Arbeitsgruppenseminar Analysis

Algebraic combinatorics approach to moment-to-cumulant relations in free probability

Yannic Vargas (University of Potsdam)

The study of relations between moments and cumulants plays a central role in both classical and non-commutative probability theory. In the last decade, the work of Patras and Ebrahimi-Fard   provided... 

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02.12.2021, 16:15  –  Raum 2.9.0.12
Seminar Geometrie

Spectral estimates for Callias operators

Alberto Richtsfeld

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01.12.2021, 13:30  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Schreier graphs of self-similar groups as source of examples in spectral graph theory

Tatiana Smirnova-Nagnibeda (Genf)

Abstract: In this talk we will discuss some results in the spectral theory of infinite graphs obtained using techniques coming from the study of self-similar groups and their actions.

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30.11. bis 30.11.2021, 12:15-13:45  –  Room 2.09.2.22 Campus Golm, C9A03 Tübingen
Geometric Analysis, Differential Geometry and Relativity

Stability of timelike minimal surfaces in expanding spacetimes

Philip Thonke

The timelike minimal surface equation is a degenerate hyperbolic system describing the motion of a relativistic membrane, or p-brane. Using a harmonic map gauge, Olaf Milbredt has obtained local... 

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26.11.2021, 10:15 - 11:30  –  building 28, room 0.108 (Campus Golm)
SFB-Kolloquium

Towards Interactive AI-based Decision Support Systems

Enkelejda Kasneci (University of Tübingen)

The use of AI has improved computer-aided diagnosis systems in many areas. However, the underlying models are often black boxes that allow the user only limited control over the predictions, which can... 

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25.11. bis 26.11.2021, from 9 am  –  Campus "Am Neuen Palais"
Konferenz

Stochastic processes and statistical machine learning, III

Deutsch-Französisches DoktorandenKolleg Potsdam/Toulouse

The French-German graduate school Potsdam-Toulouse called Stochastic processes and statistical machine learning is funded by the French-German University for the period  2018-2021. Aims of this... 

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25.11.2021, 16:15  –  Raum 2.9.0.12
Seminar Geometrie

Index theory for relative Dirac bundles

Jonas Rungenhagen

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24.11.2021, 14:00  –  Golm, Haus 9, 2.22 und Zoom
Institutskolloquium

Operator algebras on manifolds: from the boundaryless to the boundary case

Elmar Schrohe (Leibniz University Hannover) und Ryszard Nest (University of Copenhagen)

2 pm: Elmar Schrohe (Leibniz University Hannover): Introduction to a Theorem by Duistermaat and Singer

3:15 pm: Ryszard Nest (University of Copenhagen): Order Preserving Isomorphisms of Boutet de... 

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24.11.2021, 4:30 pm - 5:00 pm  –  Golm, Haus 9, Raum 2.22 and Zoom

SIAM Chapter Seminar: On the weighted asymptotic number of simplicial spanning trees in random \(k\)-regular simplicial complexes

Lior Tenenbaum

Abstract: In 1981, Mckay proved an asymptotic result regarding the number of spanning trees in random \(k\)-regular graphs. In this talk we will discuss an analogous result for random high dimensional... 

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24.11.2021, 13:30 Uhr  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Graphs with positive spectrum

Bobo Hua (Fudan University Shanghai)

Abstract: We prove sharp l^2 decay estimates of nonnegative generalized subharmonic functions on graphs with positive Laplacian spectrum, which generalizes the result by Li and Wang on Riemannian... 

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23.11. bis 23.11.2021, 12:15_13:45  –  Room 2.09.2.22 Campus Golm, C9A03 Tübingen
Geometric Analysis, Differential Geometry and Relativity

Large area-constrained Willmore surfaces in asymptotically Schwarzschild 3-manifolds

Thomas Körber

In this talk, I will present recent work (joint with M. Eichmair) on large area-constrained Willmore surfaces in asymptotically Schwarzschild 3-manifolds. Using the method of Lyapunov-Schmidt... 

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23.11.2021, 10:00 Uhr  –  Golm, Haus 9 Raum 2.22 und Zoom
Forschungsseminar Statistik

Continuum-armed bandit : from the classical setting to the finite setting

Solenne Gaucher

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22.11.2021, 16:15  –  Raum 2.9.0.12
Forschungsseminar Differentialgeometrie

The Faddeev-LeVerrier algorithm

Christian Bär

The Faddeev-LeVerrier algorithm is an algorithm for the computation of the characteristic polynomial of a square matrix. It is slower than Gauss elimination but in contrast to the former it is... 

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18.11.2021, 16:15  –  Raum 2.9.0.12
Seminar Geometrie

Relative Dirac bundles

Penelope Gehring

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17.11.2021, 10-12:00  –  WIAS and Zoom
Forschungsseminar Statistik

A geometric approach to fair online learning

Christophe Giraud

A Geometric Approach to Fair Online Learning

Abstract: Machine learning is ubiquitous in daily decisions and producing fair and non-discriminatory predictions is a major societal concern.
Various... 

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17.11.2021, 15 Uhr  –  Zoom
Institutsrat

Institutsratssitzung

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16.11. bis 16.11.2021, 12:15-13:45  –  Room C9A03 Tübingen, 2.09.2.22 Campus Golm
Geometric Analysis, Differential Geometry and Relativity

On the evolution of hypersurfaces along their inverse spacetime mean curvature

Markus Wolff

We introduce a new inverse curvature flow on asymptotically flat Initial Data sets $(M,g,K)$. In General Relativity, such a triple $(M,g,K)$ arises naturally as a spacelike hypersurface of... 

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15.11.2021, 16:15  –  2.09.0.12
Forschungsseminar Differentialgeometrie

Boundary value problems for Dirac Operators on graphs

Alberto Richtsfeld

In this talk, I will present the results of my master’s thesis concerning the index and the spectrum of Dirac operators on metric digraphs, which are subject to general boundary conditions. Relying on... 

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11.11.2021, 16:15  –  Online via Zoom
Seminar Geometrie

The classical Dirac operator

Helge Frerichs

Zoom link available at this moodle.

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10.11.2021, 13:30 Uhr  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Characterizations of Forman curvature

Florentin Münch

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10.11.2021, 13:30 Uhr  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Characterizations of Forman curvature

Florentin Münch (MPI Leipzig)

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09.11. bis 09.11.2021, 12:15-13:45  –  Room 2.09.2.22 Campus Golm, C9A03 Tübingen
Geometric Analysis, Differential Geometry and Relativity

Willmore surfaces in $\R^3$

Nicolas Marque

When one considers a surface in $\R^3$, the mean curvature quickly appears as a node of geometric insight, tying itself to isoperimetry, elasticity, and regularity.  From it one can naturally build a... 

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09.11.2021, 10:00  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Statistik

Epsilon Best Arm Identification in Spectral Bandits

Dr. Tomáš Kocák

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08.11.2021, 16:15  –  2.09.0.12
Forschungsseminar Differentialgeometrie

Hyperelastic material models

Claudia Grabs

An elastic material, for that the stress tensor field of a certain deformation can be derived as gradient tensor field from a scalar potential function (called strain energy density function) is... 

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08.11. bis 19.11.2021  –  Wien
Konferenz

Higher Structures Emerging from Renormalisation

We have the pleasure to invite you to an in-person Master Class and Workshop to take place at the Erwin Schrödinger Institute (ESI) in Vienna.

For more information about the Master Class, the worhop... 

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05.11.2021, 10:15 - 11:30  –  building 28, room 0.108 (Campus Golm)
SFB-Kolloquium

Coarse-graining of complex systems with parameter uncertainties

Carsten Hartmann (Brandenburgische Technische Universität Cottbus-Senftenberg)

Complex dynamical systems like molecular systems or stochastic climate systems often involve a variety of different time and length scales. We propose a general framework for coarse graining of such... 

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05.11.2021, 11:00  –  2.22 und online
Arbeitsgruppenseminar Analysis

Areas of areas determine the iterated-integral signature of a path: An updated overview

Rosa Preiss (University of Potsdam)

We consider the anti-symmetrization of the half-shuffle on words, which we call the "area"  operator since it corresponds to taking the signed area of elements of the iterated-integral signature. We... 

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04.11.2021, 16:15  –  Raum 2.9.0.12
Seminar Geometrie

Clifford bundles and Dirac operators

Marten Steuer

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03.11.2021, 14:00  –  Online Colloquium
Institutskolloquium

Information theory in complex networks

Martin Roswall (University of Umeå, Sweden) und Karoline Wiesner (University of Potsdam, Germany)

2 pm Martin Roswall (University of Umeå): Mapping network flows with incomplete information

3:15 pm Karoline Wiesner (University of Potsdam): Information entropy in complex systems: Mathematical... 

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03.11.2021, 13:30 Uhr  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Optimal large scale Gaußian upper bounds for heat kernels of unbounded graph Laplacians

Christian Rose (Universität Bremen)

Abstract: The heat kernel as the minimal fundamental solution of the heat equation is one of the most important objects studied in geometric analysis and encodes the geometry of the underlying space... 

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02.11. bis 02.11.2021, 12:15-13:45  –  Room 2.09.2.22 Campus Golm, C9A03 Tübingen
Geometric Analysis, Differential Geometry and Relativity

Motonicity theorems for minimal surfaces and linkedness of their boundary.

Manh Tien Nguyen

I will explain how each function whose Hessian is a multiple of the metric of a Riemannian manifold $M$ corresponds to a monotonicity theorem for minimal surfaces in $M$. When $M$ is the hyperbolic... 

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02.11.2021, 10:00  –  Campus Gol, Haus 9, Raum 2.22
Forschungsseminar Statistik

Shape Constrained Thresholding Bandit Problems

James Cheshire

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01.11.2021, 16:15  –  2.09.0.12
Forschungsseminar Differentialgeometrie

Cauchy problems of the Dirac-Operator on spacetimes with timelike boundary

Penelope Gehring

Global boundary conditions for elliptic first order differential operators on Riemannian manifolds are rather well understood. Bär-Strohmaier introduced APS-conditions for the Lorentzian... 

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29.10.2021, 10:00 (unusual time)  –  Online Seminar
Arbeitsgruppenseminar Analysis

L-infinity algebra and braided field theory

Marija Dimitrijevic Ciric (University of Belgrad, Serbia)

In this talk we discuss  braided $L_\infty$-algebras and their application in the construction of field theories on noncommutative (NC) spaces. We call these NC field theories, braided field theories.
... 

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27.10.2021, 10 Uhr  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Dynamical systems with pure point spectrum

Daniel Lenz (Jena)

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26.10. bis 26.10.2021, 12:15-13:45  –  Room C9A03 Tübingen, 2.09.2.22 Potsdam Golm
Geometric Analysis, Differential Geometry and Relativity

Collapsing and noncollapsing in convex ancient mean curvature flow

Stephen Lynch

An important problem in mean curvature flow is to find conditions on initial data that rule out 'collapsing' singularity models, such as the Grim Reaper. This is a necessary step towards establishing... 

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25.10.2021, 16:15  –  2.09.0.12
Forschungsseminar Differentialgeometrie

Functorial extension of functional spaces on manifolds and vector bundles

Rubens Longhi

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20.10.2021, 13:30 Uhr  –  Haus 9, Raum 2.22 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Optimal Hardy-type inequalities on lattices in stratified groups

Philipp Hake (Leipzig)

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20.10. bis 20.10.2021, 10:00  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar

Learning a Nash equilibrium in an imperfect information game through self-play

Dr. Pierre Menard

We will present the problem of learning a Nash equilibrium in an imperfect information game (IIG) through self-play. Precisely, we focus on two-player, zero-sum, episodic, tabular IIG under the... 

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20.10.2021, 15 Uhr  –  Zoom
Institutsrat

Institutsratssitzung

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19.10. bis 19.10.2021, 12:15-13:45  –  Room 2.09.2.22 Campus Golm, C9A03 Tübingen
Geometric Analysis, Differential Geometry and Relativity

Local Foliations of Constant Spacetime Mean Curvature Surfaces

Alejandro Penuela Diaz

Inspired by the small sphere limit for quasi-local masses we study local foliations of constant spacetime mean curvature surfaces, i.e. surfaces characterizing the center of mass in general... 

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15.10.2021, 11:00  –  Golm, Haus 9, Raum 2.22 und online
Arbeitsgruppenseminar Analysis

Renormalization as an Algebraic Birkhoff Decomposition

David Prinz (University of Potsdam)

In this talk, I will give an introduction to renormalization theory in the framework of Connes and Kreimer. To this end, I will start with a brief introduction to perturbative Quantum Field Theory.... 

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13.10.2021, 13:30 Uhr  –  Haus 9, Raum 2.22
Forschungsseminar Diskrete Spektraltheorie

Fiber entropy and algorithmic complexity of random orbits

Elias Zimmermann (Leipzig)

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13.10.2021, 17:30 Uhr
Institutsveranstaltung

Antrittsvorlesung Prof. Myfanwy Evans

Porf. Myfanwy Evans

Interdisziplinäre Vielfalt von "Tangling"

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08.10.2021, 11:00  –  Golm, Haus 9, Raum 2.22 und online
Arbeitsgruppenseminar Analysis

Lie Theory for Asymptotic Symmetries in General Relativity

David Prinz (University of Potsdam) and Alexander Schmeding (Nord Universitet, Bodo, Norway)

Abstract: It is well known that the Poincaré group is the symmetry group of special relativity. In general relativity, sensible symmetry groups exist only for special spacetimes: the so-called... 

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04.10.2021, 10:15  –  3.06.H05
Kálmán Lecture

4th Kálmán Lecture with Mihaela van der Schaar

Mihaela van der Schaar

Quantitative epistemology: conceiving a new human-machine partnership

Quantitative epistemology is a new and transformational area of research pioneered by our lab as a strand of machine learning... 

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01.10.2021, 10:15 - 11:15  –  2.14.0.21
SFB-Seminar

Lassi Roininen

Lassi Roininen, Technische Universität Lappeenranta, Finland

tba

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24.09.2021, 11:00  –  Online Seminar and 2.09.2.22
Arbeitsgruppenseminar Analysis

The Euclidean contour rotation in quantum gravity

John Barrett (Nottingham University)

The talk will discuss the rotation of the contour of functional integration in quantum gravity from Lorentzian geometries to Euclidean geometries. In the usual framework of metric tensors the... 

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22.09.2021, 15 Uhr  –  Zoom
Institutsrat

Institutsratssitzung

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16.09. bis 17.09.2021, 9:00  –  University of Potsdam, Griebnitzsee Campus
Workshop Datenassimilation

GAMM ANLA Workshop 2021

various speakers

The 21th Workshop of the GAMM Activity Group on Applied and Numerical Linear Algebra will take place in Potsdam from 16th‒17th September 2021  if circumstances permit. If the meeting cannot be held in... 

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14.09.2021, 13:00 - 14:00  –  2.27.1.01
SFB-Seminar

Towards next generation data assimilation algorithms for convective scale applications

Tijana Janjic Pfander, Ludwig-Maximilians-Universität München

The initial state for a geophysical numerical model is produced by combining observational data with numerical model simulation using a data assimilation algorithm. Particularly challenging is the... 

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14.09.2021, 14:30 - 15:30  –  2.27.1.01
SFB-Seminar

Transport methods for simulation-based inference and data assimilation

Youssef Marzouk, MIT (USA)

Many practical Bayesian inference problems fall into the "likelihood-free" setting, where evaluations of the likelihood function or prior density are unavailable or intractable; instead one can only... 

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14.09.2021, 16:00 - 17:00  –  2.27.1.01
SFB-Seminar

An Introduction to Actor Critic Methods for Optimal Control

Sean Meyn, University of Florida (USA)

The goal of actor critic methods is to estimate the best policy among a parameterized family for a controlled Markov chain.   Through the magic of Markov chain theory, it is possible to obtain... 

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14.09. bis 15.09.2021  –  Campus Golm
SFB 1294 - Annual Meeting

SFB 1294 - Kick-Off Meeting

with talks by Tjiana Pfander, Youssef Marzouk, Sean Meyn, Jana de Wiljes

We are kicking of the 2nd Phase of the SFB with a 1,5 day Kick-Off Event on the 14th and 15th of September.

This includes the annual SFB meeting, poster presentations by all projects to get to know... 

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23.07.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Lie_infinity algebras and classical field theory

Larisa Jonke (Ruđer Bošković Institute, Zagreb)

I will introduce the structure of Lie_infinity algebra in the context of gauge field theory and discuss its relation to BV-BRST and Hopf algebras.

You are welcome to invite your friends and colleagues... 

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21.07.2021, 15:00  –  Zoom
Institutsrat

Institutsratssitzung

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16.07.2021, 10:15 - 11:15  –  online
SFB-Seminar

Stability of UQ and Bayesian inverse problems

Bjoern Sprungk

For partial differential equations with random coefficients we investigate the sensitivity of the distribution of the random solution with respect to perturbations in the input distribution for the... 

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16.07.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Milnor-Moore Theorem in the locality set up

Diego López (Uni Potsdam)

The Milnor-Moore Theorem, which was originally proved in 1965, describes the structure of a class of cocommutative Hopf algebras. In this talk I will discuss a generalization of the Milnor-Moore... 

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14.07.2021, 15:00!  –  Online Kolloquium
Institutskolloquium

Optimal design: methods and applications

Holger Dette (Ruhr-Universität Bochum, Germany) and John Stufken (UNC Greensboro, US)

Bitte geänderte Zeit beachten! Please mind the later starting time!

3 pm Holger Dette (Ruhr-Universität Bochum, Germany): Statistics, Geometry und Pharmacokinetics

4:15 pm John Stufken (UNC... 

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09.07.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

The variation of the trace of the heat-kernel on a manifold with boundary

Ihsane Malass (Uni Potsdam)

We present the well-known proof by Ray and Singer of the variation of the trace of the heat-kernel with respect to a family of metrics on a manifold with boundary under appropriate boundary... 

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08.07.2021, 10h30
Verteidigung der Dissertation / Defence of the PhD thesis

Contributions to the theoretical analysis of algorithms with adversarial and dependent data.

Oleksandr Zadorozhnyi (Potsdam)

I overview the results contained in my thesis that studies theoretical guarantees of both sequential and batch learning algorithms that work with adversarial and dependent data. Firstly, I present... 

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05.07.2021, 14:00
Forschungsseminar Wahrscheinlichkeitstheorie

Lévy-driven transport equations

Ilya Pavlyukevich (Jena)

In case of SDEs driven by continuous semimartingales, it is well know that their Wong-Zakai approximations converge to Stratonovich SDEs, whereas in the jump case the so-called Marcus (canonical) SDEs... 

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02.07.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Léon Rosenfeld and how historical studies can help to shed light on our striving for quantum gravity

Bernadette Lessel (MPI für Wissenschaftsgeschichte in Berlin)

Léon Rosenfeld, probably mostly known as a close collaborator of Niels Bohr, is considered to having been the first person to have ever attempted a quantization of the gravitational field in the... 

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28.06.2021, 14:00
Forschungsseminar Wahrscheinlichkeitstheorie

Emergence of interfaces from sandpile models

Wioletta Ruszel (Utrecht)

Interfaces separating two phases (e.g. water and ice) are created in phase coexistence situations such as at 0 degree Celsius. Random interface models are stochastic models which aim at explaining... 

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25.06.2021, 10:15 am  –  online
SFB-Kolloquium

Data assimilation simulation in cell biophysics problems

Tatsuo Shibata (RIKEN Center for Biosystems Dynamics Research, Japan)

Cellular signal transduction system is a complex reaction network consisting of many elements, which  allows cells to respond appropriately to external stimuli. In order to understand and predict such... 

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25.06.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Relative Traces in Obstacle Scattering and the Casimir Effect

Florian Hanisch (Uni Potsdam)

In obstacle scattering, one is interested in properties of the Laplacian ∆ on the complement of a compact set O ("the obstacles") in Euclidean space, subject to certain boundary conditions. ∆ may be... 

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23.06.2021, 15:00  –  Zoom
Institutsrat

Institutsratssitzung

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18.06.2021, 10:15 - 11:15  –  online
SFB-Seminar

Analysis of stochastic gradient descent in continuous time

Jonas Latz

Analysis of stochastic gradient descent in continuous time

Stochastic gradient descent is an optimisation method that combines classical gradient descent with random subsampling within the... 

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18.06.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

When Functional Calculus, Harmonic Analysis, and Geometry party together...

Lashi Bandara (University of Potsdam)

Functional calculus emerged in the latter half of last century as a convenient tool particularly in the analysis of partial differential equations. In the last thirty years, harmonic analysis has... 

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17.06.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Analyticity of quasinormal modes in the Kerr and Kerr-de Sitter spacetimes

Oliver Lindblad Petersen (Stanford)

Quasinormal modes are fundamental in the study of wave equations on black hole spacetimes. In this talk, I will explain why the quasinormal modes in the Kerr and Kerr-de Sitter spacetimes are real... 

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16.06.2021, 14:00 - 15:45  –  Online Kolloquium
Institutskolloquium

Fractional stochastic PDEs: From statistical applications to numerical analysis

David Bolin (King Abdullah University of Science and Technology, Saudi Arabia) and Mihály Kovács (Pázmány Péter Catholic University, Hungary and Chalmers Uni/University of Gothenburg, Sweden)

2pm-2:45pm David Bolin (King Abdullah University of Science and Technology, Saudi Arabia): Statistical models and methods based on fractional stochastic PDEs

3pm-3:45 pm Mihály Kovács (Pázmány Péter... 

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14.06.2021, 11:15
Verteidigung der Dissertation / Defence of the PhD thesis

A multifaceted study of marked Gibbs point processes

Alexander Zass

We present some results on the existence and uniqueness of marked Gibbs point processes. Firstly, we prove in a general setting the existence of an infinite-volume marked Gibbs point process, via the... 

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11.06.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

String geometry

Konrad Waldorf (University of Greifswald)

String geometry is to string theory what spin geometry is to gauge theory. String geometry can be studied via infinite-dimensional geometry and representation theory on loop spaces, or by... 

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11.06.2021, 9:00  –  Zoom
Informationsveranstaltung

Hochschulinformationstag - Das Institut für Mathematik stellt sich vor

Prof. Dr. Myfanwy Evans

In dieser Veranstaltung kann man das Institut und Studierende aus dem Fachschaftsrat kennen lernen. Außerdem geben wir einen Einblick in die Mathematik durch einen kurzen Vortrag zum Thema... 

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09.06.2021, 13:30 Uhr
Forschungsseminar Diskrete Spektraltheorie

Safoura Zadeh (MFO Leibniz Fellow)

Safoura Zadeh (MFO Leibniz Fellow)

Please contact Siegfried Beckus (beckus@uni-potsdam.de) if you are interested to join the talk.

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07.06.2021, 14:00
Forschungsseminar Wahrscheinlichkeitstheorie

Spatial and temporal central limit theorems for geodesic and horocycle flows on hyperbolic surface

Emilio Corso (ETH Zürich)

A leitmotif in probability theory is the discovery of universal, deterministic phenomena underlying the asymptotic behaviour, in a suitably defined sense, of random structures. In the ergodic theory... 

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04.06.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

On vector bundle groupoids, principal bundles groupoids, their gauge group and their nerve

Alfonso Garmendia (Uni Potsdam)

We consider groupoids in the category of principal bundles, which we call principal bundles groupoids. We build  their ajoint bundle groupoids which we interpret as vector bundle groupoids, widely... 

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03.06.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

An index theorem on asymptotically static spacetimes with compact Cauchy surface

Michał Wrochna (Cergy Paris Université)

A theorem due to Bär and Strohmaier (Amer. J. Math., 141 (5)) says that the Dirac operator on a Lorentzian manifold with compact Cauchy surface is Fredholm if Atiyah-Patodi-Singer boundary conditions... 

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02.06.2021, 13:30 Uhr  –  Zoom
Forschungsseminar Diskrete Spektraltheorie

Wiener's lemma along subsequences.

Tanja Eisner (Leipzig)

Title: Wiener's lemma along subsequences.

Abstract: We discuss the validity of the classical Wiener lemma and the extremal behaviour of a measure on the unit circle via the behavior of its Fourier... 

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31.05.2021, 14:00  –  Zoom
Forschungsseminar Wahrscheinlichkeitstheorie

Feynman-Kac formula for 1st order perturbations of covariant Laplace-type operators

Batu Güneysu (UP)

Abstract:
It is a classical fact that one can represent the heat semigroup of a Schrödinger operator (that is, a perturbation of the Laplacian by a real-valued potential) as a path integral in terms... 

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28.05.2021, 10:15  –  online
SFB-Kolloquium

Understanding and predicting global biodiversity dynamics

Damaris Zurell (Universität Potsdam)

Almost 200 years ago, Alexander von Humboldt said in his famous Cosmos series that „all natural forces are linked together, and made mutually dependent upon each other“. Today, biodiversity and... 

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28.05.2021, 16:00  –  Zoom
Institutsveranstaltung

Euler Vorlesung

Prof. Fernando Codá Marques (Princeton University)

In diesem Jahr freuen wir uns Prof. Fernando Codá Marques (Princeton University) als Sprecher bei der Euler-Vorlesung begrüßen zu dürfen:

Titel: Morse theory for the area
Abstract: In this lecture we... 

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28.05.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Some aspects of groupoid techniques for pseudodifferential operators (PDOs)

Malte Leimbach (Uni Potsdam)

Following van Erp's and Yuncken's "Groupoid approach to pseudodifferential operators" I will discuss how one can use Connes' tangent groupoid and the "zoom-action" to define PDOs. I will point out... 

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27.05.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

A link between the 2D and 3D elastic moduli for isotropic homogeneous elastic materials

Claudia Grabs (UP)

There are many elastic moduli for isotropic elastic materials, such as the bulk modulus and the Youngs modulus, but they all are related to two basic material parameters, namely the Lamé parameters,... 

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26.05.2021, 14:00 - 15:45  –  Online Colloquium
Institutskolloquium

Concentration of measure: from functional inequalities to optimal transport theory

Radoslaw Adamczak (University of Warsaw) und Nathael Gozlan (Université Paris-Descartes)

2pm-2:45pm Radoslaw Adamczak (University of Warsaw): Concentration of measure and functional inequalities

3pm-3:45 pm Nathael Gozlan (Université Paris-Descartes): The two-periodic Aztec diamond

Abstra... 

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26.05.2021, 13:30 Uhr
Forschungsseminar Diskrete Spektraltheorie

Alexey Klimenko (HSE University Moscow)

Alexey Klimenko

Please contact Siegfried Beckus (beckus@uni-potsdam.de) if you are interested to join the talk.

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21.05.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Hopf algebras as quantum spacetime symmetries and noncommutative gravity

Paolo Aschieri (Alessandria and Torino)

We recall how the geometry of noncommutative gauge fields naturally emerges in quantum field theory and string theory. In this context Hopf algebras in general replace the usual notion of symmetry... 

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20.05.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Scalar and mean curvature comparison via the Dirac operator

Rudolf Zeidler (Universität Münster)

In recent years, Gromov proposed studying the geometry of positive scalar curvature (psc) via various metric inequalities vaguely reminiscent of classical comparison geometry. For instance, let... 

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20.05.2021, 14:00
Forschungsseminar Wahrscheinlichkeitstheorie

A multifaceted study of marked Gibbs point processes

Alexander Zass (UP)

In this talk we present some results on the existence and uniqueness of marked Gibbs point processes. Firstly, we prove in a general setting the existence of an infinite-volume marked Gibbs point... 

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19.05.2021, 15:00  –  Zoom
Institutsrat

Institutsratssitzung

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19.05.2021, 13:30 Uhr  –  Zoom
Forschungsseminar Diskrete Spektraltheorie

Structure of Delone Sets, a Review

Jean Bellissard (University of Münster)

Please contact Siegfried Beckus (beckus@uni-potsdam.de) if you are interested to join the talk.

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18.05.2021, 8:15-9:45
Gastvortrag

Markov chain analysis in climate dynamics

Dr. Sebastian Mieruch-Schnülle (AWI)

Im Rahmen der Klimacampus-Woche 2021 (17-22. Mai)

This guest Seminar is on the use of Markov chains for the analysis of the dynamics and succession of compound extreme events in a changing climate.

Zo... 

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14.05.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Cointeracting bialgebras on permutations and set partitions

Yannic Vargas (Univ. of Potsdam and IVIC, Caracas, Venezuela)

Pairs of cointeracting bialgebras recently appeared in the study of  combinatorial Hopf algebras based on trees (Calaque, Ebrahimi-Fard, Manchon), graphs (Manchon) and posets (Foissy). Several results... 

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12.05.2021, 13:30 Uhr  –  Zoom
Forschungsseminar Diskrete Spektraltheorie

Path homology on digraphs

Alexander Grigor'yan (University of Bielefeld)

Please contact Siegfried Beckus (beckus@uni-potsdam.de) if you are interested to join the talk.

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12.05.2021, 10:00  –  Online Veranstaltung
Öffentlicher Vortrag

Worte von Frauen in der Mathematik in der Zeit von Corona

Diverse

Wir laden sie am am internationalen Tag der Frauen in der Mathematik Mittwoch 12. Mai um 10 Uhr herzlich zur Online-Präsentation des Videos Worte von Frauen in der Mathematik in der Zeit von Corona ht... 

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10.05.2021, 14:00
Forschungsseminar Wahrscheinlichkeitstheorie

Sparse inhomogeneous random graphs from a large deviation point of view

Luisa Andreis (Uni. Firenze)

Inhomogeneous  random  graphs  are  a  natural  generalization  of  the  well-known Erdös Rényi random graph, where vertices are characterized by a type and edges are independent but distributed... 

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07.05.2021, 10:15 am  –  online
SFB-Kolloquium

Likelihood-based estimation, model selection, and forecasting of integer-valued trawl processes

Almut Veraat (Imperial College London)

The class of integer-valued trawl processes has recently been introduced for modelling univariate and multivariate integer-valued time series with short or long memory.

In this talk, I will discuss... 

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07.05.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

The spectral action principle on Lorentzian scattering spaces

Viet Dang (University of Lyon)

The spectral action principle of Connes recovers the Einstein Hilbert action from spectral data and is one of the cornerstones of the noncommutative geometry approach to the standard model, yet it is... 

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30.04.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Combinatorial Hopf algebras: definition and examples

Cécile Mammez (University of Lille)

The theory of Hopf algebras, initially motivated by investigations on compact Lie groups, has been intensively studied. Many connections with areas of mathematics (algebraic combinatorics,... 

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29.04.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Weyl laws for regular realizations of elliptic operators

Magnus Goffeng (Lund University)

Using a Bär-Ballmann type machinery, one can describe all realizations of elliptic operators on manifolds with boundary. Classically, boundary value problems are phrased in terms of imposing a... 

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26.04.2021, 14:00 - 15:00
Forschungsseminar Wahrscheinlichkeitstheorie

Random connected subgraph on Zd: A phase transition result

David Dereudre (Lille, Frankreich)

We consider the bond percolation model on the lattice Zd (d≥2) with the constraint to be fully connected. Each edge is open with probability p∈(0,1), closed with probability 1−p and then the process... 

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23.04.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Locality and renormalisation in perturbative AQFT

Kasia Rejzner (University of York)

In this talk, I will give a review of how locality enters the Epstein-Glaser renormalisation scheme and report on some more recent results regarding locality and its breaking in pAQFT.

Forthcoming... 

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22.04.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Graphical decompositions for higher order boundary value problems

Lashi Bandara (UP)

The graphical decomposition for elliptic boundary conditions, obtained by Bär-Ballmann, is an important characterisation of such boundary conditions.
It allows for deformations of these boundary... 

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21.04.2021, 14:00 - 15:45  –  Online Meeting
Institutskolloquium

Dimers and diamonds: From the Aztecs to Ising via Gibbs

Béatrice De Tilière (IUF, University Paris Dauphine CEREMADE) and Sunil Chhita (Durham University)

2pm-2:45pm Béatrice De Tilière (IUF, University Paris Dauphine CEREMADE): The Z-invariant Ising model via dimers

3pm-3:45 pm Sunil Chhita (Durham University): The two-periodic Aztec diamond

Abstracts:

...  mehr erfahren

16.04.2021, 10:15 am  –  online
SFB-Kolloquium

MaRDI - The Mathematical Research Data Initiative within the NFDI

Karsten Tabelow (WIAS Berlin)

Like in all scientific disciplines research data in mathematics has become vast, it is complex and multifaceted, and, through the successful application of mathematics in interdisciplinary research,... 

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16.04.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

On the volume of generalized tubes

Annegret Burtscher (Radboud University Nijmegen)

Abstract: Consider a small spherical tube around a compact submanifold M in Euclidean space. In 1939 Weyl showed the remarkable property that the volume of such a tube only depends on the radius of... 

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15.04.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Eigenvalue estimates involving Bessel functions

Georges Habib (Lebanese University Beirut)

Given a compact Riemannian manifold \((M^n ,g)\) with smooth boundary \(\partial M\), we give an estimate for the quotient \(\frac{\int_{\partial M} f dv_g}{\int_M f dv_g}\) in terms of the Bessel... 

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12.04.2021, 18:00  –  Online-Veranstaltung
Informationsveranstaltung

Willkommensveranstaltung für neue Masterstudierende

Das Institut für Mathematik begrüßt die neuen Studierenden am Institut. Um den Einstieg zu erleichtern findet am Montag, den 12.04.2021 um 18 Uhr, eine kurze Einführungsveranstaltung in Zoom statt.... 

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30.03.2021, 16:00  –  Haus 9, 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Spin-Hall effects in General Relativity

Marius -Adrian Oancea

TERMINÄNDERUNG! Moved back from 23rd to 30th of March.

Abstract:

The propagation of test fields on a fixed Lorentzian manifold is often studied by using the geometrical optics approximation. In the... 

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25.03.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Positive scalar curvature on manifolds with odd order abelian fundamental groups

Bernhard Hanke (Augsburg)

We introduce Riemannian metrics of positive scalar curvature on manifolds with Baas-Sullivan singularities, prove a corresponding homology invariance principle and discuss admissible products. Using... 

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19.03.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Grassmann stochastic analysis

Massimiliano Gubinelli (Uni Bonn)

Another session of the Renormalisation and Geometry seminar, with a talk by Massimiliano Gubinelli (Uni Bonn).

Abstract: I will review some recent progresses in understanding the stochastic... 

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18.03.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Index theorems on non-closed manifolds

Mehran Seyedhosseini (UP)

I will talk about an index theorem of Roe for open manifolds and some of its geometric applications. Along the way, we will encounter localised analytic indices of Connes and Moscovici. I will then... 

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11.03.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Linear wave equations on the Schwarzschild black hole spacetime

Ariane Beier (UP)

The radial part of the scalar wave equation (SWE) on the Schwarzschild spacetime can be interpreted and analysed as a Sturm-Liouville problem. Considering a topological quantum number or fields of... 

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11.03.2021, 09:15  –  Campus Golm, Haus 28, Raum 0.108
Verteidigung der Dissertation / Defence of the PhD thesis

"Neue Zugänge zum Winkelbegriff"

Heiko Etzold

Titel der Dissertation:

Neue Zugänge zum Winkelbegriff.

Fachdidaktische Entwicklungforschung zur Ausbildung des Winkelfeldsbegriff bei Schülerinnen und Schülern der vierten Klassenstufe

 

Interessiert... 

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15.02. bis 19.02.2021  –  Online Meeting
Konferenz

Microlocal and Global Analysis, Interactions with Geometry

We have the pleasure to invite you to the next edition of a series of meetings initiated by Professor Schulze devoted to microlocal, singular and global analysis and their interactions with geometry... 

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12.02.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

On the pole structure of Shintani zeta functions

Diego Lopez (Uni Potsdam)

Shintani zeta functions generalize multizeta functions, and these in turn generalize the Riemann zeta function. They also relate to conical zeta functions associated with cones. In this talk,... 

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11.02.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

About the irreducible Representations of SU(3)

Jonas Rungenhagen (UP)

In this talk, I want to go over some representation theoretical background to introduce the irreducible representations of the special unitary group SU(3). This is motivated by the calculation of the... 

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11.02.2021, 14:00 Uhr  –  Zoom-Videokonferenz
Öffentlicher Vortrag

UN Tag - "Women in Science"

Eine Reise durch die Wissenschaften mit Doktorandinnen

Diese interdisziplinäre Veranstaltung zum internationalen Tag der Frauen und Mädchen in den Wissenschaften findet in 2021 im dritten Jahr statt... 

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11.02.2021, 2 pm  –  Zoom Video Conference
Öffentlicher Vortrag

International Day - "Women in Science"

A journey through the sciences with female PhD students

For this third edition (this time online) at the University of Potsdam of the International Day of Women and Girls in Science 2021 seven female... 

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10.02.2021, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Threshold Ornstein-Uhlenbeck process: drift parameters estimation

Dr. Sara Mazzonetto

With the term threshold diffusion we denote diffusion processes which follow different dynamics in different space intervals. We focus on the one-dimensional case of two Ornstein-Uhlenbeck dynamics in... 

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05.02.2021, 11:15  –  Online Meeting
Arbeitsgruppenseminar Analysis

Some questions about renormalisation

Lorenzo Zambotti (Sorbonne University, Paris)

Another session of the Renormalisation and Geometry seminar, with a talk by Lorenzo Zambotti (Sorbonne University, Paris).

Abstract: In this informal talk I would like to explain briefly how I came in... 

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04.02.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Relative Traces in Obstacle Scattering

Florian Hanisch (UP)

In obstacle scattering, one is interested in properties of the Laplacian
∆ on the complement of a compact set O ("the obstacles") in Euclidean
space. It may be compared with the free Laplacian ∆₀  and... 

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03.02. bis 01.02.2021, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Generalized non-stationary multi-armed Bandits

Anne Manegueu (Magdeburg)

Recent decades have seen rapid advances in multi-armed bandits (MAB) algorithms, due to their ability to optimize with the presence of uncertainty. Classical MAB problems are studied based on the... 

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29.01.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Evaluating germs at poles and locality

Sylvie Paycha (Uni Potsdam)

How to evaluate  meromorphic germs at their poles while preserving a locality principle reminiscent of locality in QFT is a question that lies at the heart of  pQFT. It further  arises in other... 

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28.01.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Center of mass in general relativity

Alejandro Peñuela Diaz (UP)

We will see different approaches to the problem of defining a center of mass of a system in general relativity, specifically in the setting of the initial value formulation of general relativity. We... 

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27.01.2021, 14:00 - 15:45  –  Online Meeting
Institutskolloquium

Evolution of probability densities in complex systems

Michela Ottobre (Heriot-Watt University) and Carsten Hartmann (BTU Cottbus-Senftenberg)

2pm-2:45pm Michela Ottobre (Heriot-Watt University): Non-mean-field interacting particle systems

3pm-3:45 pm Carsten Hartmann (BTU Cottbus-Senftenberg): Optimal control of the underdamped Langevin... 

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27.01.2021, 13:00-13:30
Forschungsseminar Wahrscheinlichkeitstheorie

Wilcoxon-Test: Ein Rangtest für zwei unverbundene Stichproben

Angelina Henning (UP)

In diesem Vortrag wird das Testverfahren von Wilcoxon betrachtet, welches eine Alternative zum 2-SP-t-Test liefern kann. Dieses Verfahren gehört zu den sogenannten Rangtests. Neben der theoretischen... 

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22.01.2021, 10:15  –  online
SFB-Seminar

Global sensitivity analysis in environmental modeling

Kim Aleksandra, ETH Zürich and Paul Scherrer Institute (Switzerland)

In today’s complex world and economy, international supply chains of goods cause global environmental impacts. Life Cycle Assessment (LCA) is a well established tool used for quantification of product... 

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22.01.2021, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Exponential renormalisation

Kurusch Ebrahimi Fard (University of Trondheim)

Next talk in the monthly (online) seminar Renormalisation and Geometry organised jointly with friends and colleagues from various countries in Europe

Titel: Exponential renormalisation
Abstract: We... 

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21.01.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Splitting of the Jacobi operator for extremal submanifolds with higher codimension

Claudia Grabs (UP)

We consider a Riemannian manifold with an embedded submanifold, which is extremal for some energy functional. For these embeddings, we compare the Jacobi operators corresponding to the different... 

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20.01.2021, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Concentration inequalities for dependent random fields

Oleksandr Zadorozhnyi (Uni Potsdam)

In this talk I firstly discuss a general martingale-difference approach which can be used to obtain some of the existing concentration inequalities for 1-dimensional weakly-dependent random processes.... 

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15.01.2021, 15:00  –  online - cancelled
SFB-Kolloquium

Kayo Ide

Cancelled - Kayo Ide (University of Maryland, US)

Unfortunately we had to cancel this Colloquium and will continue with our series in the new term.

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15.01.2021, 11:00  –  Online Meeting
Arbeitsgruppenseminar Analysis

Dirac's 3-form formulation of gauge theory

Chand Devchand (University of Potsdam)

It is well-known that gauge theories in four-dimensional space time are conformally invariant. However, for the field equations, as they are usually written, only the Lorentz invariance is manifest.
... 

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14.01.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

First order differential operators on spacetimes with timelike boundary

Penelope Gehring (UP)

Boundary value problems for elliptic first order differential operators on Riemannian manifolds are rather well understood. Recently, Bär-Strohmaier introduced APS-conditions for the Dirac operator on... 

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13.01.2021, 14:00  –  Online Meeting
Institutskolloquium

Entanglement of graphs and networks

Sonja Berthel (Vrije Universitet, Amsterdam) and Myfawny Evans (University of Potsdam)

If you wish to attend the talks,  please contact Sylvie Paycha paycha@math.uni-potsdam.de for the login details.

2pm-2:45pm Sonja Berthel (Vrije Universitet, Amsterdam): Entanglements in (molecular)... 

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13.01.2021, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Stochastic optimal control of SDEs for importance sampling of path functional

Han Cheng Lie (University of Potsdam)

The estimation of statistics of functionals of a diffusion process is a problem that arises in multiple applications. An example of such a problem involves estimating the expected value of the first... 

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08.01.2021, 11:00  –  Online Meeting
Arbeitsgruppenseminar Analysis

Linear generalised complex structures

Malte Heuer (University of Hamburg)

Generalised complex structures were introduced by Nigel Hitchin and studied by Marco Gualtieri as a unification of complex and symplectic structures. In this talk I will first recall basic definitions... 

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07.01.2021, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Geometric Inverse Problems in Gauge Theory

Chen Xi (Cambridge, UK)

The fundamental interactions of elementary particles are described by the Euler-Lagrange equations in the Standard Model of particle physics. The Yang-Mills equation addresses the electroweak and... 

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06.01.2021, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Mastering the Maze - Reinforcement Learning in Grid-World-Setup

Peter Keller

Imagine, a robot is moving through a maze that consists of equal sized rooms. Adjacent rooms are connected by doors. The robot can now perform actions, choosing the next door with respect to a given... 

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17.12.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

L^p-stability and positive scalar curvature rigidity of Ricci-flat ALE manifolds

Klaus Kröncke (Tübingen)

We prove stability of integrable ALE manifolds with a parallel spinor under Ricci flow, given an initial metric which is close in \(L^p\cap L^{\infty}\), for any \(p \in (1, n)\), where n is the... 

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16.12.2020, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

An explicit uniqueness region for Gibbs point processes

Alexander Zass (Potsdam)

We present a uniqueness result for Gibbs point processes with repulsive pair interaction; in particular, we provide an explicit uniqueness region in terms of the activity and inverse temperature... 

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11.12.2020, 10:00  –  online
SFB-Kolloquium

Bayesian nonparametric estimation in multivariate non linear Hawkes processes

Judith Rousseau (University of Oxford, UK)

tba

mehr erfahren

11.12.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Higher gauge theory

Branislav Jurco (Charles University in Prague)

Abstract: This will be a leisurely introduction, from first principles, to higher gauge theory with higher groupoids as gauge structures. As a model for higher (Lie) groupoids we will use Kan... 

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10.12.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Long-time estimates for heat flows on ALE manifolds

Oliver Lindblad Petersen (Stanford)

We consider the heat equation associated to Schrödinger operators acting on vector bundles on asymptotically locally Euclidean (ALE) manifolds. Assuming that the Schrödinger operator can be written as... 

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09.12.2020, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Minimax optimal goodness-of-fit testing under local differential privacy

Joseph Lam (Magdeburg)

The consequences of local differential privacy constraints on goodness-of-fit testing are considered, i.e. the statistical problem assessing whether sample points are generated from a fixed density or... 

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08.12.2020, 13:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Monodromy and Holonomy groupoid for singular foliations

Alfonso Garmendia (University of Postdam)

The next talk in the series of online seminars "At the confluence of Geometry, Analysis and Mathematical Physics" together with our colleagues from Beirut.

Title: Monodromy and Holonomy groupoid for... 

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04.12.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Noncommutative localization in smooth deformation quantization

Hamilton Araujo (University of Haute Alsace in Mulhouse)

This talk consists of a discussion around the analytical localization of the algebras of functions in deformation quantization (a theory that uses algebraic deformation to quantify the algebras of... 

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03.12.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Boundary Value Problems for the Lorentzian Dirac operator

Sebastian Hannes (UP)

I'm going to briefly explain the main problems and results of my thesis and then focus on discussing some examples to show how these results apply, where they they can be extended, and also where they... 

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02.12.2020, 13:00
Forschungsseminar Wahrscheinlichkeitstheorie

Consensus Dynamics and Exclusion processes

Jens Fischer (Potsdam/Toulouse)

The voter model and the Deffuant model are two well known models on networks where individual opinions influence the relationsship dynamics. Recent work related to social networks focuses entirely on... 

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02.12.2020, 16:30  –  Online Ph.D. Seminar

What are Optimal Hardy Inequalities?

Florian Fischer

I will give an overview of recent developments in the study of Hardy-type inequalities on manifolds and on graphs. In particular, I will present a technique to get 'as large as possible' Hardy weights... 

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27.11.2020, 15:00  –  online
SFB-Kolloquium

Joint Colloquium of SFB 1287 and SFB 1294 with Nikolaus Kriegeskorte

Nikolaus Kriegeskorte (Zuckerman Institute, Columbia University New York)

Cognitive computational neuroscience of vision

To learn how cognition is implemented in the brain, we must build computational models that can perform cognitive tasks, and test such models with brain... 

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27.11.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Causality in quantum theory and beyond

Michał Eckstein (University of Gdansk)

It is a pleasure to announce the first talk of the monthly (online) seminar: Mathematics emerging from the Quantum, and beyond: where Renormalisation meets Geometry

organised jointly with friends and... 

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26.11.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Functorial construction of functional spaces on vector bundles

Rubens Longhi (UP)

A suitable category of vector bundles will be introduced, in which every object is obtained as a limit of trivial vector bundles. Then, a functorial definition for general functional spaces will be... 

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26.11. bis 26.11.2020, 10:30  –  Online Seminar
Arbeitsgruppenseminar Analysis

Moment maps in (multi)symplectic geometry: an introduction

Leyli Mammadova (University of Leuven)

Moment maps in (multi)symplectic geometry: an introduction

The purpose of the talk is to give an audience-friendly introduction to the concept of moment map in multisymplectic geometry. The talk will... 

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25.11.2020, 14:00  –  Online Meeting
Institutskolloquium

Through the looking-glass: a walk in the land of Fusion Categories

Ana Ros Camacho (Cardiff University, Wales), Yiby Morales (Universidad de Los Andes, Bogotá, Colombia))

If you wish to attend the talks,  please contact Sylvie Paycha paycha@math.uni-potsdam.de for the login details.

14:00 Ana Ros Camacho (Cardiff University, Wales): A gentle introduction to fusion... 

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25.11.2020, 12:00-13:30
SFB-Seminar

Mini Seminar Series on „Non-Gaussian large scale Bayesian inversion“

jointly organised by Jana de Wiljes and the Lappeenranta-Lahti University of Technology (LUT, Finland)

Mini Seminar Series Schedule

12:00-12:30 Jarkko Suuronen (LUT) - tba

12:30-13:00 Sahani Pathiraja... 

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20.11.2020, 10:00  –  online
SFB-Kolloquium

Posterior consistency in Bayesian inference with exponential priors

Masoumeh Dashti (University of Sussex, UK)

 

We consider the problem of recovering the underlying truth in a nonparametric Bayesian inference setting with p-exponential priors. These priors are a class of infinite dimensional product measures... 

mehr erfahren

20.11.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Regularised traces and Getzler’s rescaling

Sylvie Paycha (Uni Potsdam)

Inspired by Gilkey's invariance theory,  Connes' deformation to the normal cone and Getzler's rescaling method, we single out a class of geometric operators among pseudodifferential operators acting... 

mehr erfahren

13.11.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Analytic torsion for manifolds with boundary

Ihsane Malass (Uni Potsdam)

The well-known  independence on the metric of the analytic torsion on a boundaryless manifolds was discussed in the case of a manifold with boundary by various mathematicians among whom Cheeger,... 

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06.11.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

Instantons with a Nahm pole at infinity

Marco Usula (KU Leuven, Université Libre de Bruxelles)

The Nahm pole boundary condition was introduced by Mazzeo and Witten in order to study an elliptic boundary problem for solutions of the Kapustin--WItten equation, a complex version of the classical... 

mehr erfahren

30.10.2020, 11:00  –  Online Seminar
Arbeitsgruppenseminar Analysis

2-Gauge transformations: A cabinet of curiosities

Alfonso Garmendia (Uni Potsdam)

Gauge transformations  are present both in Mathematics and Physics where  they play a key role in  field  theory. In mathematical terms, these transformations are special maps on a principal bundle  ... 

mehr erfahren

29.10.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

On the Cauchy problem for symmetric hyperbolic systems on globally hyperbolic manifolds with timelike boundary

Simone Murro

The well-posedness of the Cauchy problem for symmetric hyperbolic systems on a Lorentzian manifold is a classical problem that has been thoroughly studied in many contexts. Particularly, if the... 

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23.10.2020, 11:00  –  Online Meeting
Arbeitsgruppenseminar Analysis

From complementations on lattices to locality

Sylvie Paycha (University of Potsdam)

The first talk of the fall semester starts with Sylvie Paycha speaking about "From complementations on lattices to locality".

Abstract. A complementation proves useful to separate divergent terms... 

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15.10.2020, 09:15  –  Campus Golm, Haus 9, Raum 0.12
Verteidigung der Masterarbeit / Defence of the Master thesis

Introduction to the Glauber Dynamics for the Curie-Weiss Potts Model

Paul Tschisgale

Abstract: In this talk we present Glauber dynamics as a way of simulating configurations according to the Gibbs distribution of the Curie-Weiss Potts model . In particular, we first present essential... 

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12.10. bis 16.10.2020  –  online
Konferenz

Higher Structures Emerging from Renormalisation

The  international meeting

  Higher Structures Emerging from Renormalisation

               https://www.esi.ac.at/events/e375

which will take place online due to the Covid-19 pandemic, aims to... 

mehr erfahren

01.10. bis 02.10.2020  –  University Duisburg Essen
Forschungsseminar

Virtual Workshop for Young Researchers on Singular foliations and related subject

Alfonso Garmendia, Leonid Ryvkin

The idea of the workshop is to bring together young researchers from the field of singular foliations and related topics. The workshop will take place online over zoom in two sessions.

Link to the... 

mehr erfahren

24.09.2020, 14:00  –  Zoom-Meeting
Verteidigung der Masterarbeit / Defence of the Master thesis

Die isoperimetrische Ungleichung und ihre Verallgemeinerungen

Karsten Hansch

Interessenten schreiben für die Zoom-Zugangsdaten bitte eine E-Mail an cbaer@uni-potsdam.de

mehr erfahren

24.09. bis 25.09.2020  –  online
Konferenz

GAMM Workshop Applied and Numerical Linear Algebra 2020

The 20th Workshop of the GAMM Activity Group on Applied and Numerical Linear Algebra will take place online via zoom in a reduced format from 24th-25th September 2020. There will be plenary talks by

D... 

mehr erfahren

18.09.2020, online  –  University of Potsdam
Institutsveranstaltung

A scientific tribute to Prof. Nikolai Tarkhanov

Nikolai Tarkhanov

23.03.1956-31.08.2020

 

Nikolai Tarkhanov, who passed away on July 31st, was an enthusiastic teacher, a generous and learned man, behind whose modesty there was an outstanding... 

mehr erfahren

07.09.2020, 10:15  –  online via zoom
SFB-Kolloquium

3rd Kálmán Lecture mit Sara van de Geer (ETH Zürich)

Sara van de Geer (ETH Zürich)

The Lasso revisited: entropy bounds and dual certificates

The Lasso is least squares estimation with an ℓ1-penalty on the coeffcients. In this talk we consider the case where the design matrix is... 

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23.07. bis 23.07.2020, 16:00  –  Zoom meeting
Arbeitsgruppenseminar Analysis

The Cesàro expansion of the Spectral Action

Juan Daniel Lopez Castano (Universidad Nacional de Colombia)

The spectral action is the natural and appropriate notion of action on the space of spectral triples, introduced by Chamseddine and Connes in [CC97] and defined as follows: given a spectral triple (A,... 

mehr erfahren

17.07.2020, 10:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Example of Baum-Connes isomorphism for the pure braid group on four strands

Sara Azzali (Hamburg University)

The Baum--Connes conjecture predicts an isomorphism between two objects associated with a discrete countable group. The first one is topological in nature and involves a classifying space for proper... 

mehr erfahren

16.07.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

A relative Cheeger-Gromov rho-invariant and the space of positive scalar curvature metrics on manifolds with boundary

Mehran Seyedhosseini

Secondary invariants associated to positive scalar curvature metrics on closed spin manifolds have been used to study the space of such metrics on a fixed manifold. I will first talk about a result of... 

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16.07.2020, 15:30  –  Webinar
Forschungsseminar Wahrscheinlichkeitstheorie

Modelization of Covid 19 by multitype branching processes

Andrea Hübner

Master thesis

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15.07.2020, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Holomorphic maps on complex manifolds: two perspectives

Florian Bertrand (American University of Beirut), Francine Meylan (Uni Freiburg)

If you wish to attend the talks,  please contact Sylvie Paycha paycha@math.uni-potsdam.de for the login details.

14:00 Florian Bertrand (American University of Beirut) : Analytic discs in Complex... 

mehr erfahren

10.07.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Singular Hölder spaces and applications

Carlo Bellingeri (TU Berlin)

We introduce the class of singular Hölder paths, singular controlled rough paths and singular rough paths. These spaces arise naturally from the context of regularity structures and they can be used... 

mehr erfahren

09.07.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

A long neck principle for Riemannian spin manifolds with positive scalar curvature

Simone Cecchini (Göttingen)

We develop index theory on compact Riemannian spin manifolds with boundary in the case when the topological information is encoded by bundles which are supported away from the boundary. As a first... 

mehr erfahren

03.07.2020, 11:00
Arbeitsgruppenseminar Analysis

Locality structures: vector spaces and lattices

Pierre Clavier (Uni Potsdam)

Given a locality (ie binary symmetric) relation T on a vector space V, it is in general difficult to decide if (V,T) is a locality vector space, that is to say if T respects the linear structure of V... 

mehr erfahren

02.07.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Spectral theory on stationary spacetimes

Alexander Strohmaier (Leeds)

For compact Riemannian manifolds the Gutzwiller-Duistermaat-Guillemin trace formula is one of the standard tools to show Weyl laws, investigate questions of quantum chaos, and prove inverse spectral... 

mehr erfahren

26.06.2020, 11:00  –  Zoom meeting
Arbeitsgruppenseminar Analysis

Renormalization of gauge theories

Henry Kißler (HU Berlin)

Last term, Alfonso and Pierre have been talking about gauge theories and I'd like to add some aspects about renormalization to the discussion. Due to quantisation, singular integrals arise; curing... 

mehr erfahren

25.06.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Self-adjoint codimension 2 boundary conditions for Dirac operators

Bernd Ammann (Regensburg)

Let N be an oriented compact submanifold of codimension 2 in an oriented complete Riemannian manifold M. We assume that M\N is spin and carries a unitary line bundle L. We study the self-adjoint... 

mehr erfahren

22.06.2020, 12:15  –  Webinar
Forschungsseminar Wahrscheinlichkeitstheorie

Sequential prediction for arbitrary time-series

Pierre Gaillard (INRIA Paris)

In this presentation we will examine the framework for online prediction of arbitrary time series. In the latter, a learner sequentially makes predictions of a time series, for which no stochastic... 

mehr erfahren

19.06.2020, 11:00  –  Zoom meeting
Arbeitsgruppenseminar Analysis

Quantum groups and K-theory

Roland Vergnioux (Uni-Caen)

I will start by presenting the theory of compact/discrete quantum groups and in particular the so-called "free quantum groups". Then I will explain how the Baum-Connes conjecture can be adapted to... 

mehr erfahren

18.06.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

The KO-valued spectral flow for skew-adjoint Fredholm operators

Matthias Lesch (Bonn)

We give a comprehensive treatment of a ‘Clifford module flow’ along paths in the skew-adjoint Fredholm operators on a real Hilbert space that takes values in KO(R) via the Clifford index of... 

mehr erfahren

17.06.2020, 14:00  –  Zoom meeting
Institutskolloquium

Examples of random graphs in hyperbolic geometry

Dieter Mitsche (University of Lyon 1), David Coupier (University of Valenciennes)

If you wish to attend the talks,  please contact Sylvie Paycha paycha@math.uni-potsdam.de for the login details.

Please note that the second talk has been advanced by 15 min to 3:15pm!

14:00 Dieter... 

mehr erfahren

12.06.2020, 10:15  –  online
SFB-Kolloquium

Digital first, concerns second: Our power to change everyday life and the question of responsibility in algorithm development

Ulrike Lucke (UP) and Ina Müller (UP)

Developers of IT systems have enormous power. - And therefore also a great responsibility. This applies especially to the ideas and concepts about the social domain, which are inscribed in the... 

mehr erfahren

12.06.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Mellin transform of multivariate rational functions

Diego Andrés López Valencia (Potsdam University)

The Mellin transform is very useful when studying meromorphic continuations of different types of zeta functions, however it is not always easy to calculate. In this talk I will introduce and... 

mehr erfahren

11.06.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

On the evolution of hypersurfaces along their inverse spacetime mean curvature

Markus Wolff (Tübingen)

We introduce a new inverse curvature flow on asymptotically flat Initial Data sets (M,g,K). In General Relativity, such a triple (M,g,K) arises naturally as a spacelike hypersurface of a Lorentzian... 

mehr erfahren

08.06.2020, 12:20  –  Webinar
Forschungsseminar Wahrscheinlichkeitstheorie

Metastability in the Curie-Weiss and randomly dilute Curie-Weiss models

Saeda Marello (Bonn)

The Curie-Weiss model (CW) is a classical model of a ferromagnetic spin system in which all spins interact with each other. After giving an introduction on metastability, a phenomenon appearing in a... 

mehr erfahren

08.06.2020, 11:45  –  Webinar
Forschungsseminar Wahrscheinlichkeitstheorie

The (neural network) Hopfield Model applied to decision making in behavioural science

Anne Flöge (Potsdam)

TBA

mehr erfahren

05.06.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Algebraic structures on noncrossing partitions

Loïc Foissy (ULCO)

The theory of free probabilities uses the combinatorics of noncrossing partitions in order, for example to establish relations between free cumulants and moments of a random variable. We shall... 

mehr erfahren

04.06.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Functional spaces on manifolds and vector bundles

Rubens Longhi

I will construct the space of distributional sections of general vector bundles and give a general definition for local and compactly supported functional spaces.

Access data at: https://moodle2.uni-p... 

mehr erfahren

03.06.2020, 11:00
Arbeitsgruppenseminar Analysis

From gauges to gaugeoids: connections and transformations II

Sylvie Paycha (Potsdam University)

Two essential ingredients in classical gauge field theory are  gauge fields given by  connections on a principal bundle  and gauge transformations given by automorphisms of the bundle.

Principal... 

mehr erfahren

29.05.2020, 10:15
SFB-Kolloquium

Statistical properties of deterministic dynamical systems and their applications in weather and climate forecasting

Georg Gottwald (University of Sydney, Australia)

The talk is concerned with recent results on statistical properties of deterministic dynamical systems. We will discuss the problem of finding diffusive limits in multi-scale systems. Homogenization... 

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29.05.2020, 11:00
Arbeitsgruppenseminar Analysis

From gauges to gaugeoids: connections and transformations

Sylvie Paycha (Potsdam University)

Two essential ingredients in classical gauge field theory are  gauge fields given by  connections on a principal bundle  and gauge transformations given by automorphisms of the bundle.

Principal... 

mehr erfahren

28.05.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Minimal surfaces, periodic tangling and wrinkly skin

Myfanwy Evans

This talk will introduce the use of geometric ideas in the characterisation and analysis of biophysical systems. Triply-periodic minimal surfaces and their occurrences in nature will provide the... 

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22.05. bis 23.06.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

The bar-cobar construction

Pierre Clavier (Uni Potsdam)

The bar-cobar construction a pair of adjoint functors between the categories of differential graded associative algebras and codifferential cograded coalgebras. In this pedagogical introduction, I... 

mehr erfahren

15.05.2020, 14:00  –  Auditorium Maximum, Haus 8, Am Neuen Palais
Öffentlicher Vortrag

Euler-Vorlesung 2020

Fernando Codá Marques

mehr erfahren

15.05.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Renormalization of determinant lines in Quantum Field Theory

Viet Dang Nguyen (Université Lyon 1)

In the present talk, we will discuss how we understand a three page note from Quillen's notebook where he tries to make sense of the technique of "adding counterterms to the Lagrangian to remove the... 

mehr erfahren

14.05.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Manifolds with many Rarita-Schwinger fields

Christian Bär

The Rarita-Schwinger operator is the twisted Dirac operator restricted to 3/2-spinors. Rarita-Schwinger fields are solutions of this operator which are in addition divergence-free. This is an... 

mehr erfahren

13.05.2020, 14:00  –  Zoom meeting
Institutskolloquium

From dynamics to rigidity

Nguyen Viet Dang (University Claude Bernard, Lyon 1) und Colin Guillarmou (University Paris XI)

If you wish to attend the talks,  please contact Sylvie Paycha paycha@math.uni-potsdam.de for the login details.

14:00 Nguyen Viet Dang (University Claude Bernard, Lyon 1): Dynamical systems: spectral... 

mehr erfahren

08.05.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Locality tensor products and universal properties

Diego Andrés López Valencia (Potsdam University)

In the context of locality, there is a generalization of the usual tensor product which is expected to remain in the category of locality vector spaces, however this is still an open problem. In this... 

mehr erfahren

06.05.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Areas of areas generate the shuffle algebra (Part II)

Rosa Preiß (TU Berlin)

We consider the anti-symmetrization of the half-shuffle on words, which we callthe area operator, since it corresponds to taking the signed area of elements of the iterated-integral signature. The... 

mehr erfahren

30.04.2020, 16:15  –  Online-Seminar
Forschungsseminar Differentialgeometrie

Scalar positive immersions

Bernhard Hanke (Augsburg)

As shown by Gromov-Lawson and Stolz the only obstruction to the existence of positive scalar curvature metrics on closed simply connected manifolds in dimensions at least five appears on spin... 

mehr erfahren

29.04.2020, 11:00  –  Zoom meeting
Arbeitsgruppenseminar Analysis

Areas of areas generate the shuffle algebra

Rosa Preiß (TU Berlin)

We consider the anti-symmetrization of the half-shuffle on words, which we callthe area operator, since it corresponds to taking the signed area of elements of the iterated-integral signature. The... 

mehr erfahren

29.04.2020, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

ENTFÄLLT

David Damanik (Rice University, Houston), Marko Lindner (Technische Universität Hamburg)

Spectral Theory, Dynamical Systems, Aperiodic Order

mehr erfahren

24.04.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Free Wick polynomials

Nikolas Tapia (TU Berlin and WIAS)

Solutions to the Dyson-Schwinger equation can be obtained by inverting the normal ordering operator. This operator is related to Wick polynomials of annihilation and creation operators. In this talk I... 

mehr erfahren

23.04.2020, 16:15  –  Online Seminar
Forschungsseminar Differentialgeometrie

Horizons in general relativity

Oliver Lindblad Petersen (Stanford)

Moncrief and Isenberg conjectured in 1983 that any compact Cauchy horizon in a smooth vacuum spacetime is a smooth Killing horizon. We present a proof of this conjecture, under the assumption that the... 

mehr erfahren

17.04.2020, 11:00  –  Zoom Meeting
Arbeitsgruppenseminar Analysis

Rigging Technique for 1-Lightlike Submanifolds

Hans Fotsing (African Institute for Mathematical Sciences, Cameroon)

We will discuss riggings on a 1-lightlike  submanifold, which  have many of the good properties of the Gauss map of non degenerate hypersurfaces. We will also show that for the case of the (n+... 

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06.04.2020, 14:00  –  Virtual meeting via zoom, see link below
Verteidigung der Masterarbeit / Defence of the Master thesis

Characteristic classes in computer algeba

Michael Jung

Link to virtual meeting room: https://us04web.zoom.us/j/908168941?pwd=VGs0Z2FPM1Fza1FEbVQzNFJxelUzQT09

mehr erfahren

26.03.2020, 9:45 bis 15:15  –  Campus Golm
Schülerförderung

[entfällt] Zukunftstag

Aufgrund der derzeitigen Corona-Situation muss der Zukunftstag am 26.3. an der Universität Potsdam leider entfallen. Ein Ersatztermin im Herbst wird geprüft – Informationen dazu folgen zu... 
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13.03. bis 13.03.2020, 11:00  –  Raum 2.22
Seminar "Topics in Geometric Analysis"

Some details of the proof of the Positive-Mass Theorem in higher dimensions

Simon Hirscher

Since its release on the arXiv in 2017, the (so far unpublished) proof of the higher-dimensional Positive-Mass Theorem by Schoen & Yau has become notorious for being rather difficult to understand,... 

mehr erfahren

12.03.2020, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Minimizers of Generalized Willmore Functionals and Applications in General Relativity

Alexander Friedrich

mehr erfahren

28.02.2020, 10:15-11:15  –  Haus 9, Raum 0.13
SFB-Seminar

Relaxation techniques for PDE-constrained optimization in inverse problems

Tristan van Leeuwen (Universiteit Utrecht, The Netherlands)

PDE-constrained optimization problems arise in many applications, including inverse problems and optimal control. As optimization over both the control and state parameters is not feasible for... 

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26.02. bis 26.02.2020, 12:30  –  Campus Golm, Haus 9, Raum 2.09.2.22
Forschungsseminar Diskrete Spektraltheorie

Harmonic Functions on Graphs with Group Actions

Matti Richter

mehr erfahren

26.02.2020, 10:15-11:15  –  Haus 9, Raum 0.13
SFB-Seminar

Multilevel ensemble Kalman filtering algorithms

Hakon Hoel (RWTH Aachen)

The ensemble Kalman filter (EnKF) is a Monte-Carlo-based sequential filtering method that is often both robust and efficient, but its performance may suffer in settings where the computational cost of... 

mehr erfahren

25.02.2020, 13:00-14:00  –  Haus 9, Raum 0.12
SFB-Seminar

Contaminant dispersal, numerical simulation, and stochastic PDEs

Tony Shardlow (University of Bath)

Atmospheric dispersal of contaminants such as ash can be modelled by stochastic differential equations coupled to a large-scale weather model. We develop this model as used by the UK Met Office and... 

mehr erfahren

25.02.2020, 14:00  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

An approach for geometric counterexamples for the ​​​​​​H^\infty calculus

Lashi Bandara

mehr erfahren

20.02.2020, 8:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

GAMP 2020 Workshop: At the confluence of Geometry Analysis and Mathematical Physics

Diverse

GAMP 2020 Workshop

we are pleased to invite you to the first workshop of the Germano-Lebanese project ``At the confluence of Geometry Analysis and Mathematical Physics'' in collaboration with the... 

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14.02.2020, 11:00-12:00  –  Haus 9, Raum 0.13
SFB-Seminar

Statistics for chaotic dynamics and random patterns

Heikki Haario, LUT University (Technische Universität Lappeenranta), Finland

We discuss methods for creating Gaussian likelihoods for data that does not directly follow any known statistics. Obvious summary statistics are available, such as averages, but they turn out to lose... 

mehr erfahren

14.02.2020, 10:00-11:00  –  Haus 9, Raum 0.13
SFB-Seminar

Posterior Inference for Sparse Hierarchical Non-stationary Models

Lassi Roininen, University of Oulu, Finland

Gaussian processes are valuable tools for non-parametric modelling, where typically an assumption of stationarity is employed. While removing this assumption can improve prediction, fitting such... 

mehr erfahren

11.02.2020, 14:00 Uhr  –  Campus Golm, Haus 28, Raum 0.108
Öffentlicher Vortrag

Naturwissenschaftlerinnen werden vorgestellt

Am internationalen Tag der Frauen und Mädchen in den Wissenschaften soll diese interdisziplinäre Veranstaltung dazu beitragen, Frauen in den Naturwissenschaften sichtbarer zu machen. Zu diesem Zweck... 

mehr erfahren

11.02.2020, 16:30-17:00  –  Haus 9, Raum 2.22

Boundary Regularity for Elliptic Partial Differential Equations

Philipp Bartmann

The behaviour of solutions to elliptic PDE's at the boundary of a domain $\Omega$ depends heavily on the geometry of $\partial\Omega$. One is therefore interested in criteria to $\Omega$ that ensure... 

mehr erfahren

10.02. bis 14.02.2020  –  Campus Neues Palais, Building 9, 1.02
Konferenz

Microlocal and global analysis in geometry and mathematical physics

We have the pleasure to invite you to the next edition of a series of meetings initiated by Professor Schulze devoted to microlocal, singular and global analysis and their interactions with geometry... 

mehr erfahren

07.02.2020, 14:15  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Nodal Domains and Boundary Representation for Dirichlet Forms

Michael Schwarz

mehr erfahren

06.02.2020, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Das Nadel-Problem von Buffon

Josephine Bommer

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 27

mehr erfahren

05.02.2020, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

A mathematical perspective on solid state physics: localisation and ergodicity

Peter Müller (Ludwig-Maximilians-Universität München), Felix Pogorzelski (Universität Leipzig)

14:00 Peter Müller (Ludwig-Maximilians-Universität München): Localisation for Delone operators: results from wonderland and beyond

15:00 Tea and Coffee Break

15:30 Felix Pogorzelski (Universität... 

mehr erfahren

04.02.2020, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Geometry of minimal elastic energy surfaces with SageManifolds

Claudia Grabs

We show how to compute minimal elastic energy surfaces for rotationally symmetric deformations of annulus shaped reference configurations. The computations are done with the SageManifolds extension of... 

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04.02.2020, 16:15-18:45  –  Universität Potsdam, 2.09.2.22
Seminar "Topics in Geometric Analysis"

Topics in Geometric Analysis

Tobias Lamm, Tristan Rivière

16:15

Tobias Lamm

(KIT Karlsruhe)

Limits of α-harmonic maps

In a famous paper, Sacks and Uhlenbeck introduced a perturbation of the Dirichlet energy, the so-called α-energy Eαα>... 

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03.02.2020, 16:00  –  Haus 9, Raum 2.22
Oberseminar Analysis, Geometrie, Physik

The Prime Number Theorem

Sylvie Paycha

mehr erfahren

03.02.2020, 14:15-15:15  –  TU Berlin Mathematikgebäude Raum MA748
SFB-Seminar

Implicit equation-free methods applied on noisy slow-fast systems

Anna Dittus, Universität Rostock

Slow-fast systems consist of slow macroscopic and fast microscopic dynamics. By using equation-free methods, one can do a complete bifurcation analysis of these slow macroscopic variables, even if... 

mehr erfahren

31.01.2020, 10:15-11:15  –  Campus Golm, Haus 26, Raum 0.76
SFB-Seminar

Data-driven reconstruction of chaotic dynamics using data assimilation and machine learning

Marc Bocquet (École des Ponts ParisTech)

Recent progress in machine learning has shown how to forecast and, to some extent, learn the dynamics of a model from observations, resorting in particular to residual neural networks. These... 

mehr erfahren

30.01.2020, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Das endliche Kakeya-Problem

Benjamin Baron

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 35

mehr erfahren

29.01.2020, 16:15  –  Campus Golm, Haus 9, Raum 2.22

Weyl Asymptotics for Difference Operators and Statistical Mechanics

Enrico Reiß

The physically motivated quantization procedure generates an operator (the so-called pseudo-differential operator, PDO) from a function on the phase space $$\mathbb{R}^n \times \mathbb{R}^n$$ (the... 

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28.01.2020, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Representations of Compact Lie Groups

Jonas Rungenhagen

In this talk, I want to give an overview about the representation theory of compact Lie groups as it has various applications.

mehr erfahren

27.01.2020, 15:00  –  Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 14, Raum 2.14.0.12
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Embodied Movement in Mathematics Education

Prof. Arthur Bakker (Freudenthal-Institut, Niederlande)

Can moving the body have added value in learning mathematics? Much research on embodied cognition suggests that cognition is distributed across brain, body, tools, environment, and culture. Far less... 

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27.01.2020, 16:15  –  Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 14, Raum 2.14.0.12
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Measurement as relational, intensive and inclusive

Prof. Nathalie Sinclair (Simon-Fraser-University, Canada)

To measure is at once a practical and a conceptual engagement with the world. At its most basic, measuring involves empirical encounters (broadly conceived) that allow one to assign various... 

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27.01.2020, 12:15  –  Campus Golm Haus 9 Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

On the maximum of a perturbed random walk

Andrey Pilipenko (Kyiv)

Abstract. Let \((\xi_1,\eta_1), (\xi_2,\eta_2),\ldots\) be asequence of i.i.d. two-dimensional random vectors. We prove a functional limit theorem for the maximum of a perturbed random walk \(\underse... 

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27.01.2020, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Complex Dynamics: The Fatou-Julia-Baker Theorem II

Christian Bär

mehr erfahren

24.01.2020, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Machine Learning for Enhanced Mobility

Katharina Morik (TU Dortmund)

Mobility is an important topic, because on the one hand, the global world requires mobility of people and goods, but on the other hand, we suffer from traffic jams and pollution. This broad field... 

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23.01.2020, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Zerlegung von Rechtecken

Nazli Mammadova

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 29

mehr erfahren

22.01. bis 22.01.2020, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

Quantitative estimates between the spectra of Schrödinger operators

Dr. Siegfried Beckus (Universität Potsdam)

mehr erfahren

22.01.2020, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

21.01.2020, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Edge-following topological states

Matthias Ludewig (Adelaide)

Recently, physicists have been able to create “topological states” localised on the boundary of a 2D system, which have rather crazy properties: they fill up spectral gaps in the boundary-less 2D... 

mehr erfahren

21.01.2020, 13:00  –  Campus Golm, Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Introduction to invariant metrics

Florian Bertrand (Beirut)

In this talk, I will survey some of the classical biholomoprhically invariant metrics defined on domains in the complex Euclidean space. These metrics and related objects are particularly adapted to... 

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20.01.2020, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Complex Dynamics: The Fatou-Julia-Baker Theorem

Christian Bär

mehr erfahren

20.01.2020, 12:15  –  Campus Golm Haus 9 Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Stochastic dependent bandits with memory

Oleksandr Zadorozhnyi (Potsdam)

In the talk I present the stochastic multi-armed bandit problem and its analysis in the case when the arm samples are dependent over time and generated from the so-called weak \(\mathcal{C}\)-mixing... 

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16.01.2020, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Die Borsuk-Vermutung

Martin Botushev

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 18

mehr erfahren

15.01. bis 17.01.2020  –  Universität Potsdam, 2.14.0.45
Seminar "Nonlinear Wave Equations"

Winter School: Wave equations and Fourier integral operators on models of an expanding universe

Please visit the Website for Details

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15.01.2020, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Model-based Data Analysis in the Life Sciences

Jan Hasenauer (Universität Bonn), Sebastian Sager (Universität Magdeburg)

14:00 Jan Hasenauer (Universität Bonn) On the mathematical modelling of biochemical reactions networks

15:00 Tea and Coffee Break

15:30 Sebastian Sager (Otto-von-Guericke Universität Magdeburg)

Abstra... 

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14.01.2020, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Construction of asymptotically hyperbolic electrically charged manifolds

Penelope Gehring

Mantoulidis and Schoen constructed smooth asymptotically flat manifolds of dimension 3 with prescribed horizon boundary, whose mass can be made arbitrarily close to the optimal value in the Riemannian... 

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14.01.2020, 16:15-18:45  –  FU Berlin, Arnimalle 6, SR 031
Seminar "Topics in Geometric Analysis"

Topics in Geometric Analysis

Heiko von der Mosel, Lynn Heller

16:15

Heiko von der Mosel

(RWTH Aachen)

On integral Menger curvature

Using concepts from elementary geometry like the circumcircle radius one can construct various families of... 

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13.01.2020, 12:15  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

A Gibbsian model for message routeing in highly dense multihop networks

András Tóbiás (TU Berlin)

We investigate a probabilistic model for routeing of messages in relay-augmented multihop ad-hoc networks, where each transmitter sends one message to the origin. Given the (random) transmitter... 

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13.01.2020, 16:15  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

„Der Garten der Unendlichkeit“: Ein Projekt zur Erforschung der Unendlichkeit in der Sekundarstufe I

Stephanie Kasparek (Bonn)

Es wird ein Projekt vorgestellt, das im Rahmen einer Masterarbeit an der Humboldt-Universität entwickelt wurde. Die Lehrerin wird hier zur Geschichtenerzählerin: „Der Garten der Unendlichkeit“ steht... 

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13.01.2020, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Hardy's Theorem

Markus Klein

mehr erfahren

10.01.2020, 11:00-12:00  –  Campus Golm, Haus 29, Raum 0.25/0.26
SFB-Seminar

Challenges in Dynamical Systems Inference: New Approaches for Parameter and Uncertainty Estimation

Matthias Chung

Mathematical modeling has been a key tool in various scientific fields (such as biology, medicine, and engineering) in understanding systems dynamics. Parameter inference for such systems have been... 

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10.01.2020, 10:00-11:00  –  Campus Golm, Haus 29, Raum 0.25/0.26
SFB-Seminar

Advancements in Hybrid Iterative Methods for Inverse Problems

Julianne Chung

In many physical systems, measurements can only be obtained on the exterior of an object (e.g., the human body or the earth's crust), and the goal is to estimate the internal structures. In other... 

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09.01.2020, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Stumpfe Winkel

Josephin Kühne

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 17

mehr erfahren

07.01.2020, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Geometric and obstacle scattering at low energy

Alden Waters (Groningen)

We consider the problem of obstacle scattering for the Helmholtz equation with the p-form Laplace Beltrami operator. On manifolds which are asymptotically Euclidean we show resolvent expansions, and... 

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06.01.2020, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Banach Algebras: The Gleason-Kahane-Zelazko Theorem

Lukas Minogue

mehr erfahren

19.12.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Simplexe, die einander berühren

Noreen Fischer

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 16

mehr erfahren

18.12. bis 18.12.2019, 14:15 Uhr  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Discrete Ricci curcature, diameter bounds and rigidity

Florentin Münch

mehr erfahren

18.12.2019, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Verteidigung der Masterarbeit / Defence of the Master thesis

Das Zentrifugenproblem - ein algebraischer Zugang

Anna-Lena Wegen

mehr erfahren

17.12.2019, 13:00 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Öffentlicher Vortrag

Nonparametric Statistics and Information Theory

Dr. Ester Mariucci

In this talk I will briefly present the research topics I have worked on and discuss the main lines of my future research.
My research interests lie at the frontier between mathematical statistics and... 

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17.12.2019, 15:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Öffentlicher Vortrag

Composite-composite testing and extensions

Prof. Alexandra Carpentier

Testing theory is a corner stone of mathematical statistics, with many practical applications. While asymptotic and parametric testing is relatively well understood, many additional issues arise in... 

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17.12.2019, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Boundary value problems for the Lorentzian Dirac operator

Sebastian Hannes

We consider the Dirac operator on a globally hyperbolic spacetime with compact, spacelike Cauchy hypersurfaces. In this setting the Dirac operator is known to be Fredholm and have a smooth solution... 

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16.12.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

The Paley-Wiener Theorem and Hardy's Theorem

Markus Klein

mehr erfahren

16.12.2019, 16:15  –  Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 14, Raum 2.14.0.47
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

The geometry of movement: Designing a gesture-based virtual environment for making and transforming spatial inscriptions

Prof. Justin Dimmel (University of Maine, U.S.A.)

I report on the design and development of HandWaver, an immersive virtual environment for making and transforming spatial inscriptions: representations that are inscribed into space itself, rather... 

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16.12.2019, 12:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

The first passage problem for stable linear delay equations perturbed by small power law Lévy noise

Michael Högele (Universidad de los Andes, Bogotà, Colombia)

In this talk we present a linear scalar delay differential equation subject to small multiplicative power tail Lévy noise. We solve the first passage (the Kramers) problem with probabilistic methods... 

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13.12.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Low dimensional approximation of weak constraint variational data assimilation

Melina Freitag (Universität Potsdam)

Weak constraint four-dimensional variational data assimilation is an important method for incorporating data (typically observations) into a model. The resulting minimisation process takes place in... 

mehr erfahren

12.12.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Der Starrheitssatz von Cauchy

Luise Fritsche

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 14

mehr erfahren

11.12.2019, 12:30-14:00  –  Campus Golm, Haus 14, Raum 0.26/27
SFB-Seminar

Bayesian Inference Made Easy via Auxiliary Augmentations

Theo Galy-Fajou (TU Berlin)

Bayesian Inference is almost always a very challenging mathematical and computational problem. In the context of Gaussian Process, only a Gaussian likelihood leads to an analytically tractable... 

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11.12. bis 11.12.2019, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.2.22
Forschungsseminar Diskrete Spektraltheorie

Two trace formulae for Hermitian matrices

Uzy Smilansky (Weizmann Institute of Science)

Trace formulae are one of the most important tools in a large number of fields ranging from quantum chaos via spectral geometry, graphs and number theory. Here, I shall present two rather... 

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11.12.2019, 11:00  –  tba
Forschungsseminar

Seminar on Groupoids and Index Theory: Introduction to K and KK-Theory III

Mehran Seyedhosseini

mehr erfahren

11.12.2019, 10:15  –  Haus 9, Raum 2.22 (Campus Golm)
Verteidigung der Dissertation / Defence of the PhD thesis

Contributions to multiscale statistical analysis on random geometric graphs

Franziska Göbel

Abstract here.

mehr erfahren

11.12.2019, 13:45 Uhr  –  Campus Golm, Haus 9, Raum 2.09.2.22
Forschungsseminar Diskrete Spektraltheorie

Bonnet-Myers theorem for Kato-type Ricci curvature conditions

Dr. Christian Rose (MPI Leipzig)

The Kato condition on the negative part of the Ricci curvature turned out to be an appropriate generalization of Lp- curvature conditions that can be used to investigate geometric and topological... 

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10.12.2019, 15:00-16:00  –  Campus Golm, Haus 9, Raum 2.22
SFB-Seminar

Using data assimilation, systems physiology, and healthcare data to forecast physiology in an intensive care unit: why it is important, what is possible, what is hard, and the state of the art

David Albers (University of Colorado, USA)

In this talk I will present some recent results estimating and forecasting physiology in an intensive care unit (ICU) using sparse, non-stationary data collected while administering care. While I will... 

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10.12.2019, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Wavefront set of a distribution

Wai Tung Poon

On the presentation of my scientific project, I am going to show some properties about microlocal analysis. Firstly, I will define some basic notions about the distribution and Fourier transform of a... 

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09.12.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Uniqueness and Non-Uniqueness for the Radon Transform

Andreas Hermann

mehr erfahren

09.12.2019, 16:15  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Ein „Atlas der Schulmathematik der Sekundarstufe I“ für die Reise durch den Lern- alltag

Elisabeth Brunner (FU Berlin)

In diesem Vortrag wird der neu entwickelte „Atlas der Schulmathematik der Sekundarstufe I“ vorgestellt. Er er-möglicht es den Lernenden, sich zu jeder Zeit in ihrem Arbeitsprozess innerhalb der... 

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09.12.2019, 13:10  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

The one-dimensional contact process and the KPP equation with noise

Sandra Kliem (Frankfurt)

The one-dimensional KPP-equation driven by space-time white noise,
\[ \partial_t u = \partial_{xx} u + \theta u - u^2 + u^{\frac{1}{2}} dW, \qquad t>0, x \in \mathbb{R}, \theta>0, \qquad \qquad u(0,x)... 

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09.12.2019, 09:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Öffentlicher Vortrag

Testing for Independence of Large Dimensional Vectors

Prof. Dr. T. Bodnar

abstract:
In this paper, new tests for the independence of two high-dimensional vectors are investigated. We consider the case where the dimension of the vectors increases with the sample size and... 

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09.12.2019, 11:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Öffentlicher Vortrag

Perturbation theory for Markov chains

Prof. Dr. D. Rudolf

Abstract:
Perturbation theory for Markov chains addresses the question of how small differences in the transition probabilities of Markov chains are reflected in differences  between  their... 

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09.12.2019, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Öffentlicher Vortrag

Copula-based multiple hypothesis testing

Prof. Dr. T. Dickhaus

Abstract:
Multivariate multiple test procedures have received growing attention recently. This is due to the fact that data generated by modern applications typically are high-dimensional, but possess... 

mehr erfahren

06.12.2019, 14:15  –  Haus 29, Raum 0.25
Verteidigung der Dissertation / Defence of the PhD thesis

Model reduction of mechanism-based pharmacodynamic models and its link to classical drug effect models

Jane Knöchel

mehr erfahren

05.12.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Drei Anwendungen der Euler'schen Polyederformel

Mara Martin

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 13

mehr erfahren

04.12.2019, 11:00  –  Haus 9, Raum 2.22
Forschungsseminar

Seminar on Groupoids and Index Theory: Introduction to K and KK-Theory II

Mehran Seyedhosseini

mehr erfahren

04.12.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

A tribute to Emmy Noether, a hundred years after she obtained her habilitation thesis

Elizabeth Mansfield (University of Kent), David Rowe (Johannes Gutenberg University, Mainz)

14:00 Elizabeth Mansfield (Universität Kent): Noether's Theorem, both smooth and discrete

15:00 Tea and Coffee Break

15:30 David E. Rowe (Universität Mainz): On the Background to Emmy Noether’s... 

mehr erfahren

03.12.2019, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Maxwell's Equations on Globally Hyperbolic Spacetimes with Timelike Boundary

Rubens Longhi

We study Maxwell's equation as a theory for smooth k-forms on globally hyperbolic spacetimes with timelike boundary as defined by Aké, Flores and Sanchez. In particular we start by investigating on... 

mehr erfahren

02.12.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

Fourier Uniqueness via Complex Variables and a Curious Functional Equation

Andreas Braunß

mehr erfahren

28.11.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Hilberts drittes Problem: Zerlegung von Polyedern

Hanna Jürß

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 10

mehr erfahren

27.11.2019, 11:00  –  Haus 9, Raum 2.22
Forschungsseminar

Seminar on Groupoids and Index Theory: Introduction to K and KK-Theory I

Mehran Seyedhosseini

mehr erfahren

27.11. bis 27.11.2019, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

On effective impedance of networks

Anna Muranova (Bielefeld University)

Abstract

mehr erfahren

26.11.2019, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

A Functional Analytic Index Theorem

Lennart Ronge (Bonn)

Considering a family of self-adjoint Fredholm operators A(t), the equality ind(D_APS)=sf(A) will be shown under certain conditions. Here, sf(A) denotes the spectral flow of the family A, D_APS is the... 

mehr erfahren

26.11.2019, 16:15-18:45  –  FU Berlin, Arnimallee 6, SR 031
Seminar "Topics in Geometric Analysis"

Topics in Geometric Analysis

Esko Heinonen, Nicolas Marque

16:15 Esko Heinonen

Jenkins-Serrin problem for translating graphs

A translating soliton is a smooth oriented hypersurface S in MxR (or in Rn+1) whose mean curvature satisfies H =... 

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25.11.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

The Hilbert Transform

Lashi Bandara

mehr erfahren

25.11.2019, 12:15  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Frechet differentiable drift dependence of Perron-Frobenius and Koopman operators for stochastic dynamical systems

Han Cheng Lie (Universität Potsdam)

Global long-term properties of dynamical systems, such as their stationary distribution or rate of mixing, are strongly related to spectral objects of certain operators. These operators, which are... 

mehr erfahren

22.11.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Distances for discretely observed jump processes and applications in nonparametric statistics

Ester Mariucci (Universität Potsdam)

The concept of distance is ancient and ubiquitous. Being able to quantify the distance between objects has important applications everywhere in mathematics; just think of approximation theory,... 

mehr erfahren

21.11.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Cayleys Formel für die Anzahl der Bäume

Maximilian Tieze

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 33

mehr erfahren

21.11.2019, 10:00  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Ricci flow from Algebraic Quantum Field Theory III

Claudio Dappiaggi (Pavia)

We discuss the freedom in the construction of Wick polynomials for a non linear Sigma model and we introduce the associated renormalization group flow, proving that it coincides with the Ricci flow.

mehr erfahren

21.11.2019, 13:45 Uhr  –  Raum 2.09.2.22
Institutsveranstaltung

Mitarbeiterversammlung - Employee meeting

Siegfried Beckus, Peter Mahns

mehr erfahren

20.11.2019, 16:30  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Ricci flow from Algebraic Quantum Field Theory II

Claudio Dappiaggi (Pavia)

We apply the algebraic approach to construct the algebra of observables associated to non linear Sigma models. In particular we discuss the notion of Wick polynomials and their realization in terms of... 

mehr erfahren

20.11. bis 20.11.2019, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

On Courant's nodal domain property for linear combinations of eigenfunctions (after P. B\'erard, P. Charron and B. Helffer)

Bernard Helffer (University of Paris-Sud)

Abstract: We revisit  Courant's nodal domain property for linear combinations of eigenfunctions. This property was proven by Sturm (1836) in the case of dimension 1.  Although stated as true for the... 

mehr erfahren

20.11.2019, 14:00  –  Campus Golm, Haus 10, Raum 0.25
Institutskolloquium

Mathematische Lernvoraussetzungen für MINT-Studiengänge

Aiso Heinze (Leibniz-Institut, Kiel) + Diskussion

Was erwarten Hochschulen, was sollen Schulen leisten und welche Handlungsmöglichkeiten gibt es?

Seit Jahren werden mangelnde mathematische Kompetenzen von Studienanfängerinnen und Studienanfängern in... 

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19.11.2019, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Ricci flow from Algebraic Quantum Field Theory I

Claudio Dappiaggi (Pavia)

The goal of the these lectures is to give a rigorous derivation of Ricci flow starting from non linear Sigma models, within the framework of algebraic quantum field theory. In the first talk we... 

mehr erfahren

19.11.2019, 16:00-16:45  –  Campus Golm, Haus 9, Raum 2.22

An Introduction to Spectral Theory of Laplacians on Graphs

Noema Nicolussi (University of Vienna)

Abstract: Graphs and their Laplace operators play an important role in various different branches of mathematics (e.g. combinatorics, data science, group theory). A key observation is that many... 

mehr erfahren

18.11.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

The Riesz-Thorin Convexity Theorem

Siegfried Beckus

mehr erfahren

18.11.2019, 16:15  –  Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 14, Raum 2.14.0.47
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

“What you assess is what you get” - Modellierungsaufgaben in die Schule

Dr. Xenia Reit (Universität Duisburg-Essen)

Das Image von Modellierungsaufgaben im Mathematikunterricht ist eigentlich gut, können sie den Schülerinnen und Schülern doch ein reales Bild von Mathematik im Alltag und dessen Nützlichkeit... 

mehr erfahren

18.11.2019, 12:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

On diffusion processes in Euclidean space with intersecting membranes

Olga Aryasova (Kyiv)

We consider an Euclidean space with semipermeable membranes on nonsmooth surfaces, for example, on the boundary of a wedge or a cone. We study the existence and uniqueness of a strong Markov process... 

mehr erfahren

14.11.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Gitterwege und Determinanten

Artem Istranin

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 32

mehr erfahren

13.11. bis 13.11.2019, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

Approximating the integrated density of states of random Schrödinger operators - results from empirical process theory

Max Kämper (TU Dortmund)

Random Schrödinger operators are a model for metals with random impurities and this talk will present them for the special case of the Anderson operator on a lattice. We will introduce the integrated... 

mehr erfahren

11.11.2019, 16:00  –  Haus 9, Raum 0.12
Oberseminar Analysis, Geometrie, Physik

A Theorem of Beurling

Elke Rosenberger

mehr erfahren

11.11.2019, 12:15  –  Campus Golm Haus 9 Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

A nonlinear integration by parts formula for stochastic differential equations

Sara Mazzonetto

In this talk we introduce a nonlinear integration-by-parts formula for stochastic differential equations. We call it Itô-Alekseev-Gröbner formula because it generalizes both Itô formula and the... 

mehr erfahren

08.11. bis 08.11.2019, 10:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Diffeomorphism groups and isometry groups in symplectic geometry

Steven Rosenberg (Boston University)

It is difficult to say much about the topology of the diffeomorphism group and isometry group of a closed manifold, and few high dimensional results are known.  In work with Staoshi Egi and Yoshi... 

mehr erfahren

08.11. bis 08.11.2019, 11:15  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

KO valued spectral flow

Alan Carey (Australian National University, Canberra)

When applied  to condensed matter theory, the spectral flow for paths in the space of skew adjoint Fredholm operators suggests that we consider a generalisation that encompasses all of the classifying... 

mehr erfahren

08.11.2019, 10:15-11:15  –  Campus Golm, Haus 12, Raum 0.01
SFB-Seminar

Regret analysis of the Piyavskii-Shubert algorithm

Sébastien Gerchinowitz (Université de Toulouse)

We consider the problem of maximizing a non-concave Lipschitz function f over a bounded domain in dimension d. In this talk we provide regret guarantees for a decade-old algorithm due to Piyavskii and... 

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08.11.2019, 14:00  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Hadamard states for bosonic quantum field theory on globally hyperbolic spacetimes

Max Lewandowski

mehr erfahren

07.11.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Wenige Steigungen

René Hintze

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 12

mehr erfahren

06.11.2019, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

05.11.2019, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Vector Bundles and Characteristic Classes in SageManifolds

Michael Jung

SageMath ("System for Algebra and Geometry Experimentation") is an open source computer algebra system based on Python. It uses various libraries written in R, Fortran, Maxima etc. to realize an... 

mehr erfahren

04.11.2019, 12:15  –  Campus Golm, Haus 09, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Multiscale statistical analysis on random geometric graphs

Franziska Göbel (Universität Potsdam)

In this talk I will present a multiscale approach to construct a data-adapted basis-like (Parseval frame) set of functions F which allows for a decomposition of every square-integrable function... 

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01.11. bis 01.11.2019, 11:15  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rough change of variable formula for branched rough paths and quasi-shuffle algebras

Carlo Bellingeri (TU Berlin)

Starting from the classical change of variable formula for smooth paths, we will explain how to extend this identity to the case when the underlying path has generic Hölder regularity in the context... 

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30.10. bis 03.11.2019  –  Campus Golm
Veranstaltung der Fachschaft

85. Konferenz der deutschsprachigen Mathematikfachschaften

Die 85. KoMa findet vom 30.10. - 03.11. an der Universität Potsdam statt. Mehr erfahren

mehr erfahren

30.10. bis 30.10.2019, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

Infinite Quantum Graphs

Noema Nicolussi (University of Vienna)

Abstract

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30.10.2019, 16:00-16:45  –  Campus Golm, Haus 9, Raum 2.22

Spatiotemporal tracking of virtual markers on moving cell outlines

Daniel Schindler (Universität Potsdam)

Abstract: Amoeboid cell motility is essential for a wide range of biological processes including wound healing, embryonic morphogenesis, and cancer metastasis.
With the ability to generate large... 

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29.10.2019, **16:00**  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Unique continuation for wave equations and applications in general relativity

Oliver Lindblad Petersen (Uni Hamburg)

In a recent paper, Ionescu and Klainerman showed that Killing vector fields on Lorentzian manifolds can be extended using only unique continuation statements for wave equations. Before their work,... 

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25.10.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Numerical integrators for the Hamiltonian Monte Carlo sampler

Jesus Sanz-Serna (Universidad Carlos III de Madrid, Spain)

The Hamiltonian Monte Carlo (HMC) method is a widely used Markov Chain Monte Carlo algorithm that offers the possibility of combining high acceptance rates and nonlocal moves. Most of the... 

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24.10.2019, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Geraden in der Ebene und Zerlegung von Graphen

Andrea Hübner

Aigner, Ziegler: Das BUCH der Beweise, Kapitel 11

mehr erfahren

23.10.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

A probabilistic outlook on optimal mass transportation and fluid motions

Christian Léonard (Université Paris Nanterre), Marc Arnaudon (Université de Bordeaux)

14:00 Christian Léonard (Université Paris Nanterre): Optimal mass transportation: a probabilistic approach
15:00
Tea and Coffee Break
15:30
Marc Arnaudon (Université de Bordeaux): The motion of... 

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22.10.2019, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

On the number of closed geodesics

Hans-Bert Rademacher (Uni Leipzig)

It is an open question whether any Riemannian metric on a compact manifold has infinitely many geometrically distinct closed geodesics. We first revisit results for generic metrics in the case of... 

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21.10.2019, 10:15-11:15  –  Campus Golm, Haus 14, Raum 0.09
SFB-Seminar

Data assimilation for the stochastic one-layer rotating shallow water system driven by transport noise

Oana Lang (Imperial College London, UK)

In this talk we will present a data assimilation problem based on a new stochastic rotating shallow water (SRSW) signal and an adaptive tempering particle filter algorithm. The model has been obtained... 

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21.10.2019, 12:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Weyl asymptotics for discrete Hamiltonians on a scaled lattice

Enrico Reiß (Universität Potsdam)

In mean field theories of statistical mechanics where N particles interact, macroscopic observables typically take values in a scaled lattice with lattice spacing 1/N. An easy but typical example is... 

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18.10.2019, 10:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Observables of the sine-Gordon model in perturbative AQFT

Kasia Rejzner (York)

In this talk, I will present how the formal S-matrix and the interacting fields are constructed in the framework of perturbative algebraic quantum field theory (pAQFT). I will illustrate this on the... 

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18.10.2019, 11:15  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Global Seiberg-Witten maps for U(N)-bundles on tori and T-duality

Paolo Aschieri (Alessandria and Torino)

Seiberg-Witten maps are a method to locally construct noncommutative gauge theories starting from commutative gauge theories. It originated in the context of gauge theories describing low energy... 

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16.10.2019, 12:30  –  Campus Golm, Haus 9, Raum 2.09.0.14
Forschungsseminar Diskrete Spektraltheorie

Nodal statistics of quantum graph eigenfunctions

Prof. Dr. Ram Band (Israel Institute of Technology - Technion)

We discuss the number of zeros of Laplacian eigenfunctions on a metric (quantum) graph.
The n-th eigenfunction has at least n-1 zeros and at most n-1+\beta zeros, where \beta is the number of graph... 

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15.10.2019, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

The Twist of the Free Fermion

Saskia Roos

In this talk we study the free fermion in the framework of functional field theory. It turns out that the theory is twisted due to the chiral anomaly of the free fermion. We give a detailed... 

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14.10.2019, 12:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Phase transition of Gibbs point processes using Fortuin-Kasteleyn representation

Pierre Houdebert (Universität Potsdam)

The Fortuin-Kasteleyen representation, introduce in the 1960', is a method used to prove phase transition for Gibbs point process. It reduces the problem of phase transition to the study of... 

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01.10.2019, 9:00 Uhr  –  Haus 10, Raum 0.25
Informationsveranstaltung

Einführungsveranstaltung Bachelor of Science und Bachelor of Education

Diese Einführungsveranstaltung richtet sich an alle Anfängerinnen und Anfänger der Studiengänge Mathematik Bachelor of Science und Bachelor of Education. Die Institutsleitung, die Lehrkräfte der... 

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30.09.2019, 10:15-11:15  –  Campus Golm, Haus 25, Raum F1.01
SFB-Kolloquium

Second Kalman Lecture

Karen Willcox (Institute for Computational Engineering and Sciences, The University of Texas, USA)

Predictive data science for physical systems: From model reduction to scientific machine learning

Achieving predictive data science for physical systems requires a synergistic combination of data and... 

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30.09.2019, 14:15  –  Campus Golm, Haus 29, Raum 0.25/0.26
Institutsveranstaltung

Kick-Off-Meeting UFS Data Centric Sciences

Auf Initiative des Instituts für Mathematik unter Federführung von Herrn Prof. Reich ist ein Universitärer Forschungsschwerpunkt (UFS) mit dem Titel Data centric sciences (DCS) für den Zeitraum 1.... 

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13.09.2019, 10:15-11:15  –  Campus Golm, Haus 9, Raum 0.12
SFB-Seminar

Ensemble Data Assimilation for Coupled Models of the Earth System

Lars Nerger (Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Science, Bremerhaven)

Coupled models simulate different compartments of the Earth system as well as their interactions. For example coupled ocean-biogoechemical models simulate ocean circulation, biogeochemical processes... 

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11.09.2019, 11:15-11:45  –  Raum 2.22, Haus 09, Campus Golm
Verteidigung der Masterarbeit / Defence of the Master thesis

Generalized Birth-and-Death Processes

Jens Fischer

Verteidigung der Masterarbeit im Rahmen der Wahrscheinlichkeitstheorie.

Gutachterinnen: Prof. Roelly und Dr. Kosenkova

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09.09.2019, 15:00  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Dubrovin-rings and their connection to Hughes-free skew fields of fractions

Friedrich Jakobs

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05.09.2019, 11:00-12:00  –  Campus Golm, Haus 9, Raum 0.12
SFB-Seminar

Stellar Astrophysics: the power of simultaneous high resolution stellar spectroscopy, polarimetry and velocimetry. - Rotation, activity and stellar magnetic fields in the A0 standard star Vega

Torsten Böhm, Université de Toulouse

Neo-Narval at TBL/Pic du Midi (France) will be the first instrument working simultaneously in high resolution spectroscopy, polarimetry and velocimetry being entirely dedicated to stellar... 

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03.09.2019, 15:00  –  Campus Griebnitzsee, Haus 6, Hörsaal H01
Gastvortrag

Einführung zu Site Reliability Engineering bei Google

Dr. Christof Leng

Site Reliability Engineers sind Googles DevOps-Experten für den Betrieb der Produkte und internen technischen Infrastruktur. Sie müssen mit der beeindruckenden Größe, dem rasanten Wachstum und der... 

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26.08.2019, 10:15-11:15  –  Haus 28, Raum 0.102
SFB-Seminar

What is the Lagrangian for Nonlinear Filtering?

Prashant Mehta (University of Illinois, USA)

There is a certain magic involved in recasting the equations in Physics, and the algorithms in Engineering, in variational terms.  The most classical of these ‘magics’ is the Lagrange’s formulation of... 

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23.08.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Efficient implementation of an iterative ensemble smoother for big-data assimilation and reservoir history matching

Geir Evensen (NORCE Norwegian Research Centre, Norway)

Raanes et al. (2019) revised the iterative ensemble smoother of Chen and Oliver (2013), denoted Ensemble Randomized Maximum Likelihood (EnRML), using the property that the EnRML solution is contained... 

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22.08.2019, 10:15-11:15  –  Haus 9, Raum 0.12
SFB-Seminar

Applied Data Assimilation: diabetes phenotyping/forecasting + hybrid machine learning approaches

Matthew Levine

Methods from data assimilation, inverse problems, and machine learning have shown exciting potential for transforming biomedicine.
First, I will show how a Bayesian Inverse approach can be used to... 

mehr erfahren

19.08.2019, 10:15-11:15  –  Haus 28, Raum 0.108
SFB-Seminar

Fully Hyperbolic Convolutional Neural Networks

Eldad Haber (University of British Columbia, Canada)

Convolutional Neural Networks (CNN) have recently seen tremendous success in various computer vision tasks. However, their application to problems with high dimensional input and output has been... 

mehr erfahren

13.08.2019, 10:15-11:15  –  Haus 9, Raum 0.12
SFB-Seminar

Kalman-Wasserstein Gradient Flows

Franca Hoffmann (California Institute of Technology, USA)

We study a class of interacting particle systems that may be used for optimization. By considering the mean-field limit one obtains a nonlinear Fokker-Planck equation. This equation exhibits a novel... 

mehr erfahren

06.08.2019, 11:00  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Masterarbeit / Defence of the Master thesis

Didaktische Herangehensweise zur Einführung des Bruchzahlbegriffs in der 5. Klassenstufe basierend auf dem mathematischen Konzept der Zahlbereichserweiterung

Tabea Johanna Polziehn

mehr erfahren

19.07.2019, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Singular foliations and Morita equivalence

Alfonso Garmendia (KU Leuven University)

A natural example of quotient spaces are the ones given by a singular foliation on a manifold. In this case we have a canonical groupoid to model it, the holonomy groupoid.

This talk gives an... 

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18.07.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Elliptic boundary conditions in linearized elastostatics

Claudia Grabs

We consider boundary value problems in linearized elastostatics for isotropic materials. It is known that Dirichlet boundary conditions are strongly elliptic boundary conditions in the sense of... 

mehr erfahren

17.07.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Holomorphic functional calculus and nonlinear evolution equations

Sylvie Monniaux (Université Aix-Marseille), Lutz Weis (Universität Karlsruhe)

Programm

14:00 Sylvie Monniaux (Université Aix-Marseille): Maximal regularity and Navier Stokes equations

15:00 Tea and Coffee Break

15:30 Lutz Weis (Universität Karlsruhe): The H-calculus and its... 

mehr erfahren

17.07.2019, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Groupoids and Morita equivalence

Alfonso Garmendia (KU Leuven University)

Quotients spaces present a problem in differential geometry, given that usually quotients of manifolds are not smooth. One way to deal with this problem is using Lie groupoids.

Nevertheless, a... 

mehr erfahren

15.07.2019, 12:00  –  Golm Haus 9 Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Continuum limits of tree-valued stochastic processes

Wolfgang Löhr (Universität Duisburg-Essen)

Markov chains on sets of (finite, graph-theoretic) trees arise in applications, e.g., as evolving genealogical trees in population models or in Markov chain Monte Carlo methods for the reconstruction... 

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15.07.2019, 16:00  –  Raum 2.22
Forschungsseminar Differentialgeometrie

Around the Relative Index

Mehran Seyedhosseini (Göttingen)

mehr erfahren

12.07.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Neuronal networks and functional connectivity

Patricia Reynaud-Bouret (CNRS / University of Nice, France)

After giving a short introduction to biological neuronal networks and their main properties, I will explain why neurobiologists are interested by functional connectivity, which form a mathematical... 

mehr erfahren

12.07.2019, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

On Locality in Perturbative Quantum Field Theory

Konstantin Wernli (Universität Zürich)

I will discuss how to incorporate Atiyah-Segal approach to locality in
quantum field theory – namely, the behaviour of the partition function
under the cutting and gluing – in the perturbative setting.... 

mehr erfahren

10.07.2019, 10:15  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Change-point detection for seismicity parameter

Bernhard Fiedler

mehr erfahren

10.07.2019, 10:30 Uhr  –  *Haus 14 Golm, Raum 0.24/25*
Arbeitsgruppenseminar Analysis

Robin Laplacian on functions

Georges Habib (Lebanese University)

Given a Riemannian manifold with boundary, we will establish a new estimate for the first eigenvalue of the Laplacian with Robin boundary conditions. These estimates are expressed in terms of the... 

mehr erfahren

09.07.2019, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Mould and comould algebras with composition structure

Olivier Bouillot (Université Paris-Est Marne-la-Vallée)

Mould calculus is a powerful combinatorial tool which has been developed in the
late 80's by J. Ecalle. It often provides some explicit formulae when there are
no other available computational methods.
I... 

mehr erfahren

08.07.2019, 12:00  –  Golm, Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Concentration of weakly dependent Banach-valued sums and applications to statistical learning methods.

Oleksandr Zadorozhnyi (Potsdam)

In the talk I present a Bernstein type inequality for Banach-valued random sums under weak-dependency assumption of general kind on the variables and smoothness assumption on the underlying Banach... 

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04.07. bis 04.07.2019, 16.15  –  University Potsdam, Room 2.22
Seminar "Topics in Geometric Analysis"

Topics in Geometric Analysis

Armando Cabrera Pacheco, Bruno Premoselli

16:15Armando Cabrera Pacheco Extensions of minimal Bartnik data and the Bartnik mass

The Bartnik mass is an important notion of quasi-local mass in mathematical relativity, although it has the... 
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04.07.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

The Rarita-Schwinger operator - an introduction

Peter Grabs

mehr erfahren

03.07.2019, 14:00-16:00  –  2.09.2.22
Doktorandentag

Ph.D. Day

Christian Scholz, Jens Fischer, Florian Fischer

14:00 -14:30 Christian Scholz: Heat Equation and Heat Kernel Bounds on Graphs.
14:45- 15:15 Jens Fischer: Markov Chains and some Stopping Times.
15:15- 15:30 Break. Election of the new PhD... 

mehr erfahren

01.07.2019, 12:00  –  Golm Haus 9 Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Precise asymptotics of rough stochastic volatility models

Paolo Pigato (WIAS Berlin)

I will review some empirical facts on implied volatility and how they recently led to the introduction of rough (fractional) stochastic volatility models in finance. I will recall some results in... 

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26.06.2019, 17:30  –  Campus Golm, Grillplatz bei der Mensa
Institutsveranstaltung

Institutsfest 2019

mehr erfahren

21.06.2019, 10:15-11:15  –  Campus Golm, Haus 14, Raum 0.21
SFB-Seminar

Probabilistic Linear Solvers

Jon Cockayne (University of Warwick, UK)

A fundamental task in numerical computation is the solution of large linear systems, and iterative methods are among the most widely used solvers for sparse linear systems. However, for more... 

mehr erfahren

20.06.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Boundary value problems for the Dirac operator on Riemannian and Lorentzian manifolds

Christian Bär

Boundary value problems for the Dirac operator on a Riemannian manifolds are rather well understood. In particular, one has a general description of admissible boundary conditions. The Lorentzian case... 

mehr erfahren

19.06.2019, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

14.06.2019, ab 9:00 Uhr  –  Campus Griebnitzsee
Informationsveranstaltung

Hochschulinformationstag 2019

Alle Studieninteressierten sind herzlich eingeladen zum Hochschulinformationstag der Universität Potsdam. Dort stellen alle Studienfächer ihr Angebot vor. Außerdem sind auf einem Infomarkt die... 

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14.06.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Ecological Validity of the N170 – a mobile EEG study

Peter König (Universität Osnabrück)

Are event related potentials, well investigated under laboratory conditions, a signature of cortical processing during natural behavior?
We explore this question with a fully mobile recording setup.... 

mehr erfahren

13.06. bis 13.06.2019, 16.15  –  Free University Berlin, Arnimallee 3, HS 001
Seminar "Topics in Geometric Analysis"

Topics in Geometric Analysis

Wolfgang Maurer, Melanie Graf

16:15Wolfgang Maurer Curvature Flows Without Singularities

I'll give an overview of my work on curvature flows without singularities. The concept was introduced by Sáez and Schnürer in '14. They... 
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12.06.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Reversibility vs Irreversibility in gas dynamics

Thierry Bodineau (École Polytechnique, Palaiseau), Laure Saint-Raymond (École Normale Supérieure, Lyon)

Abstract

Consider the Hamiltonian dynamics of a system of hard spheres, such as billiard balls or marbles. In the kinetic limit (when the number of spheres tends to infinity), the system is described... 

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05.06. bis 05.06.2019, 4 pm  –  Golm, Haus 9, Raum 2.22

How should we describe spatial point patterns?

Alexander Zass

mehr erfahren

03.06.2019, 12:00  –  Golm, Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

The turnpike property, large deviations, and the Schrooedinger problem.

Giovanni Conforti (Ecole Polytechnique)

In deterministic control, the turnpike property is the fact that optimal solutions consist approximatively of three pieces. The first and third pieces are rapid transitions from the initial state to a... 

mehr erfahren

31.05.2019, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Coadjoint action and complete integrability

Chand Devchand (AEI)

I will review the link between coadjoint orbits of Lie groups and completely integrable flows, concentrating on infinite dimensional Lie groups related to field theory examples.

mehr erfahren

29.05.2019, *14:00 Uhr*  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Lie groups of bisections of a Lie groupoid

Alexander Schmeding (Technische Universität Berlin)

To a Lie groupoid one can associate an infinite dimensional Lie group, the so called bisection group.
These groups are closely connected to the geometry and representation theory of the underlying Lie... 

mehr erfahren

27.05.2019, 12:00  –  Golm, Haus 9, Raum 0.13
SFB-Seminar

Non–linear functionals preserving normal distribution and their asymptotic normality

Linda Khachatryan (Yerevan, Armenia)

We introduce sufficiently wide classes of non-linear functionals preserving normal (Gaussian) distribution and establish various conditions under which a sequence of such functionals is... 

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27.05.2019, 16:15 bis 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematik mit fischertechnik

apl. Prof. Dr. Thomas Püttmann

Spielend Mathematik lernen – zu diesem Zweck habe ich Modelle, Apparate und Instrumente aus fischer-technik-Teilen entwickelt, die unmittelbar zum Ausprobieren und Experimentieren auffordern. Die... 

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23.05. bis 23.05.2019, 16.15  –  University Potsdam, Room 2.22
Seminar "Topics in Geometric Analysis"

A flow approach to Bartnik's static metric extension conjecture in axisymmetry

Oliver Rinne

Metric extension problems for the static vacuum Einstein equations with prescribed geometric data on an inner boundary 2-surface arise in the context of Bartnik's proposal of a quasi-local mass in... 

mehr erfahren

22.05. bis 22.05.2019, 4:00 - 4:30 pm  –  Haus 9, Raum 2.22

Characteristic Classes implemented in SageMath

Michael Jung

SageMath is an open source variant of Mathematica and useful in various areas in mathematics. For my master thesis, I implement characteristic classes of vector bundles using the ... 

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20.05.2019, 16:15 bis 17:45  –  Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

The enabling role of dynamic interactive mediation of mathematical objects in a dy-namic interactive environment

Anna Baccaglini-Frank (University of Pisa)

The talk focuses on mathematical discourse (from a commognitive perspective) in the context of dynamic geometry and algebra software, environments in which one can construct virtual objects which... 

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20.05.2019, 12:00  –  Golm Haus 9 Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Random walk with lagging

Oleksandr Prykhodko (Kyiv)

We will construct a random walk with specific lagging in point 0 and prove that for appropriate scaling the limiting process is so-called sticky Brownian motion.

mehr erfahren

17.05.2019, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Instantons on quaternionic Kähler manifolds and prepotentials

Andrea Spiro (Università di Camerino)

An instanton on a quaternionic Kähler manifold is a connection on a principle bundle, whose  curvature is pointwise adapted to the quaternionic structure of the tangent space. 

These instantons are... 

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16.05.2019, 15:00  –  Auditorium maximum, Haus 8, Campus Am Neuen Palais
Öffentlicher Vortrag

Leibniz Kolleg Potsdam 2019: Fit in die Zukunft

Prof. Dr. Willem van Mechelen (VU University Medical Center Amsterdam, Niederlande), Prof. Dr. Soyoung Park (DIfE Potsdam / Charité Berlin)

Programm

ab 09:40 Uhr: Einführungsvorträge

ab 15:00 Uhr: Hauptvorträge

  • Physical activity behaviour: about nature, nurture and beyond
    Prof. Dr. Willem van Mechelen
    VU University Medical Center Amsterdam,... 
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16.05.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Total squared curvature of surfaces in Riemannian manifolds

Ernst Kuwert (Albert-Ludwigs-Universität Freiburg)

We discuss the problem of minimizing the total squared curvature of compact surfaces in closed Riemannian manifolds. In particular, we present an area bound in terms of the curvature for many... 

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15.05.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Regularization theory for inverse problems

Bernd Hofmann (TU Chemnitz), Elena Resmerita (Alpen-Adria Universität Klagenfurt)

Programm

14:00 Bernd Hofmann: An introduction to regularization theory for inverse problems

15:00 Tea and Coffee break

15:30 Elena Resmerita: Old and new facets of sparsity promoting regularization

...  mehr erfahren

13.05.2019, 16:15 bis 17:45  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Entdeckendes Lernen neu denken!

StRin Pauline Linke

„Ich habe heute etwas im Mathematikunterricht entdeckt!“ Diese Aussage hören wir leider viel zu selten von unseren Schülerinnen und Schülern und das obwohl entdeckendes Lernen ein in der... 

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11.05.2019, 13:00-20:00  –  Campus der Fachhochschule Potsdam
Informationsveranstaltung

Potsdamer Tag der Wissenschaften 2019

Der Potsdamer Tag der Wissenschaften 2019 findet auf dem Campus der Fachhochschule Potsdam statt. Weitere Informationen finden Sie auf der Seite des Potsdamer Tags der Wissenschaften.

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10.05.2019, 14:00  –  Auditorium Maximum, Haus 8, Am Neuen Palais
Öffentlicher Vortrag

Euler-Vorlesung 2019

Claire Voisin (Collège de France, Paris), Christian Gilain (Sorbonne Université, Paris)

Die Euler-Vorlesung 2019 wird von der französischen Mathematikerin Claire Voisin gehalten. Der traditionelle historische Vortrag wird von Professor Christian Gilain gehalten.

Claire Voisin (Collège... 

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08.05.2019, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Real spectral flow

Alan Carey (ANU, Canberra)

Witten introduced the notion of real spectral flow in the late 1980s in connection with anomalies.
His idea is quite correct but there is a gap in the argument that may be filled in using an extension... 

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03.05.2019, 10:15-11:15  –  Haus 9, Raum 0.12
SFB-Seminar

Downscaling Data Assimilation Algorithm for Dissipative Evolution Models Employing Coarse Mesh Observables

Edriss Titi (Texas A&M University, USA)

One of the main characteristics of in finite-dimensional dissipative evolution equations, such as the Navier-Stokes equations and reaction-diff usion systems, is that their long-time dynamics... 

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03.05.2019, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

TBA

11:00TBAGlobal theory of Fourier integral operators 1
13:30TBAGlobal theory of Fourier integral operators 2
15:00TBAProducts with vanishing principal symbol
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03.05.2019, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Relative Rank of Infinite Full Transformation Semigroups with Restricted Range

Kittisak Tinpun

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02.05.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Hadamard states for bosonic quantum field theory on globally hyperbolic spacetimes

Max Lewandowski

The semiclassical model of quantum field theory on curved spacetimes is considered as an intermediate step in the direction of some quantum theory of gravitation, which however already yields... 

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29.04.2019, 12:00  –  Golm, Haus 9, Raum 0.13
SFB-Seminar

An extension of Dobrushin's uniqueness criterion and applications to Gibbs point processes

Tanja Pasurek (Bielefeld)

We extend the classical Dobrushin's uniqueness criterion to Markov random fields on general graphs and with single-spin spaces that need not be locally compact. As a by-product of the method, we... 

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29.04.2019, 16:15 bis 17:45  –  Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Zur Förderung von Reflexions- und Lernprozessen in regionalen Fortbildungsveranstaltungen

Hans-Joachim Brenner (Albert-Schweitzer-Gymnasium, Erfurt)

Im Kolloquium wird ein seit 2003 durchgeführtes Projekt vorgestellt, das der empirischen Forschung zu-zuordnen ist – eine Fallstudie mit qualitativem Rahmen; Aktions- und Praxisforschung von der... 

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26.04.2019, 10:15-11:15  –  Haus 9, Raum 0.12
SFB-Seminar

Kabinettwatch: Wer wird was im Bundeskabinett?

Julia Fleischer (Universität Potsdam)

Talk by Julia Fleischer and Markus Seyfried

Das Projekt Kabinettwatch beschäftigt sich mit der Vorhersage der Zusammensetzung des Bundeskabinetts nach einer Bundestagswahl, während der Phase der... 

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25.04.2019, 16:15  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

The Yamabe problem on Lorentzian manifolds

Viktoria Rothe

Let M be a spatially compact globally hyperbolic Lorentzian manifold of dimension 4. We will examine under which conditions the Yamabe equation on M has a positive solution for all times in a given... 

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24.04.2019, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

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17.04.2019, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Lessons from General Relativity for Riemannian Geometry

Anna Sakovich (Uppsala University), Michael Eichmair (University of Vienna)

14:00 Anna Sakovich (Uppsala University): Mass in Riemannian Geometry and General Relativity

15:00 Tea and Coffee break

15:30 Michael Eichmair (University of Vienna): The isoperimetric problem for... 

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15.04.2019, 12:00  –  Golm, Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Incremental Cover Trees for Dynamic Diversification

Hannah Marienwald (TU Berlin)

Dynamic diversification – finding a set of data points with maximum pairwise distance from a time-dependent sample pool – is an important, but NP-hard problem in many different applications.... 

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12.04.2019, 10:15-11:15  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

All-at-once versus reduced formulations of inverse problems and their regularization

Barbara Kaltenbacher (Alpen-Adria Universität Klagenfurt)

Parameter identification problems typically consist of a model equation, e.g. (systems of) ordinary or partial differential equations, and the observation equation. In the conventional reduced... 

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12.04.2019, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

Markus Röser, Oliver Lindblad, Áron Szabo

11:00Markus RöserConic Lagrangian manifold
13:30Oliver LindbladInvariant definition of the principal symbol 1
15:00Áron Szabo Invariant definition of the principal symbol 2
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09.04.2019, 13:00-14:00  –  Haus 9, Raum 2.22
SFB-Seminar

Assimilating data with outer probability measures

Jeremie Houssineau (University of Warwick)

Although using probability distributions to model uncertainty is by far the most widely accepted approach, it does not come without inconveniences. A basic example of such shortcomings is the... 

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08.04.2019, 12:00  –  Golm, Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Existence of limiting correlation functions and their cluster representation

Suren Poghosyan (Yerevan, Armenia)

The traditional method for the construction of the limiting Gibbs measure uses the thermodynamic limit of the finite volume correlation functions. These limiting correlation functions are defined... 

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08.04.2019, 16:15 bis 17:45  –  Haus 28, Physik-Hörsaal 0.108
Oberseminar Didaktik

Schülerhandlungen beim Umgang mit Mathematik - Potentiale und Grenzen einer tätigkeitstheoretischen Grundlegung

Prof. Regina Bruder (TU Darmstadt)

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06.04.2019, 10:00 Uhr  –  Campus Golm, Haus 9
Schülerförderung

Schülerförderung 06.04.2019

Christian Bär, Sylvie Paycha

Klasse 9/10: Prof. Christian Bär: Das Färben von Landkarten

Auf Landkarten färbt man die Länder der besseren Übersichtlichkeit halber ein und zwar so, dass benachbarte Länder stets... 

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05.04.2019, 10:15-11:15  –  Campus Griebnitzsee, H. 06, R. 3
SFB-Kolloquium

Joined Colloquium of SFB 1114 and SFB 1294 with Felix Otto - Effective behavior of random media

Felix Otto (Max-Planck-Institut für Mathematik in den Naturwissenschaften, Leipzig)

In engineering applications, heterogeneous media are often described in statistical terms. This partial knowledge is sufficient to determine the effective, i. e. large-scale behavior. This effective... 

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01.04. bis 03.04.2019, 9:15  –  House 9 at the Campus Am Neuen Palais
Workshop

Singular diffusions: analytic and stochastic approaches, I

This Workshop is orginised in the framework of the research group linkage between the Institute of Mathematics of the University of Potsdam and the Insitute of Mathematics at the National Academy of... 

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29.03.2019, 10:15-11:15  –  Haus 9, Raum 0.14
SFB-Seminar

Asymptotic equivalence for diffusion processes and the corresponding Euler scheme

Ester Mariucci (Universität Potsdam)

When looking for asymptotic results for some statistical model, global asymptotic equivalence, in the Le Cam sense, often proves to be a useful tool that allows to work in a simpler model. In this... 

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29.03.2019, 08:30  –  Haus 25
Informationsveranstaltung

Future Learning Camp

Lernen und Erleben wird zunehmend virtuell: Virtual-Reality-Brillen, 360-Grad-YouTube-Videos oder Augmented-Reality Apps sind nicht nur beliebte Freizeitbeschäftigungen, sondern finden auch immer mehr... 

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28.03.2019, 14:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Attractors of the Einstein-Klein-Gordon system

Zoe Wyatt (University of Edinburgh)

A key question in general relativity is whether solutions to the Einstein equations, viewed as an initial value problem, are stable to small perturbations of the initial data. For example, previous... 

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28.03.2019, 15:30  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Structure from turbulence, or why you might want to care about plasma physics even if you are not a plasma physicist

Ilya Y. Dodin (Princeton University)

Turbulence has always been a tough subject to study. Interestingly though, typical turbulence equations are similar in form to those that govern nondegenerate quantum plasmas, which are easier to... 

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18.03. bis 22.03.2019  –  Tilburg (Holland)
Studienreise

Studienreise nach Tilburg (in Planung)

Koordination: Claudia-Susanne Günther

Teilnehmende:Potsdamer Lehramtsstudierende des Faches Mathematik
Programm:Besuch von Mathematikdidaktikseminaren, Begleitung von Tilburger Studierenden im Praktikum, Hospitation im Mathematikunterricht... 
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17.03.2019, 10:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Tensor and universal enveloping algebras

Diego Lopez (UP)

After recalling basic definitions in the context of locality, we shall prove the equivalence of  universal properties with/without locality for
tensor and enveloping algebras.

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11.03.2019, 15:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Wave equations on the Schwarzschild spacetime

Ariane Beier

The scalar wave equation on Schwarzschild spacetime allows physical relevant generalizations incorperating a topological quantum number and fields of higher spin. This talk focusses on the derivation... 

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04.03. bis 08.03.2019  –  Campus Am Neuen Palais, Haus 9
Konferenz

Microlocal and Global Analysis, Interactions with Geometry

Colloquium in honor of Professor Schulze's 75th birthday

Part of this conference will be a special colloquium on Wednesday, March 6, 2019, in honor of Professor Bert-Wolfgang Schulze who will... 

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02.03.2019, 10:00 Uhr  –  Campus Golm, Haus 9
Schülerförderung

Schülerförderung 02.03.2019

Prof. Gilles Blanchard, Stefan Mauerberger

Klasse 9/10: Prof. Gilles Blanchard: Einführung in die Kombinatorik

Wie viele unterschiedliche Playlists von 10 Songs kann man aus einer Musikbibliothek von 500 Songs zusammenstellen? Wieso bringt... 

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28.02.2019, **15:15**  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Feynman integrals with the Green kernel

Pavel Hajek (Universität Augsburg)

For a closed oriented Riemannian manifold M, we consider integrals associated to trivalent ribbon graphs decorated with harmonic forms at exterior vertices and the Green kernel G(x,y) at interior... 

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27.02.2019, 13:00 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Interpolation Theory for Singular Integrals on Spaces of Homogeneous Type

Philipp Bartmann

We will discuss aspects of classical interpolation theory including properties of the Hardy–Littlewood maximal function and Marcinkiewicz’s interpolation theorem. Further, we will establish the... 

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26.02.2019, **15:15**  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Complements of 2-tori in closed smooth simply connected 4-manifolds that admit a complete finite volume hyperbolic structure

Hemanth Saratchandran (Universität Augsburg)

The study of hyperbolic knot complements has a long history leading to many exciting results in the field of 3-manifold topology. In this talk, I will present a 4-dimensional analogue of this study.... 

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20.02.2019, 16:00 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Globale topologische Poincaré Ungleichung auf Graphen

Jonas Grünberg

 

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18.02.2019, 11:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Gaussian processes with inequality constraints

François Bachoc

We consider a Gaussian process subjected to inequality constraints (for instance boundedness, monotonicity or convexity). These types of inequality constraints correspond to additional information on... 

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15.02.2019, 13:00 – 17:00  –  2.09.0.12
Begegnungen mit Mathematik

Blockveranstaltung 3

Koordination: Claudia-Susanne Günther, Karen Reitz-Koncebovski, Peter Klöpping

Weitere Informationen finde Sie in PULS.

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14.02.2019, 13:00 – 17:00  –  2.09.0.12
Begegnungen mit Mathematik

Blockveranstaltung 2

Koordination: Claudia-Susanne Günther, Karen Reitz-Koncebovski, Peter Klöpping

Weitere Informationen finde Sie in PULS.

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14.02.2019, 14:00 - 17:00  –  Haus 9, Raum 2.22
Doktorandentag

PhD Day

PhD Day of the Institute of Mathematics

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13.02.2019, 13:00 – 17:00  –  2.09.0.12
Begegnungen mit Mathematik

Blockveranstaltung 1

Koordination: Claudia-Susanne Günther, Karen Reitz-Koncebovski, Peter Klöpping

Weitere Informationen finde Sie in PULS.

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11.02.2019, 11:00  –  Golm Haus 9 Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Conditioned point processes with applications to Lévy bridges

Tania Kosenkova

In the talk, we present a characterization of the bridges of Lévy processes through a functional equation. This result allows us to obtain stochastic domination for the bridges through unconditioned... 

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11.02. bis 15.02.2019, 10:00-12:00 und 14:00-16:00  –  Haus 9, Räume 0.13 und 0.14
Informationsveranstaltung

Fragestunden zu Analysis 1 und Lineare Algebra 1

Simon Hirscher

Montag 11.02. von 10:00 bis 12:00 in 2.09.0.14
Montag 11.02. von 14:00 bis 16:00 in 2.09.0.13

Dienstag 12.02. bis Freitag 15.02. jeweils von 10:00 bis 12:00 und von 14:00 bis 16:00 in 2.09.0.14

Dies... 

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08.02.2019, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The geometric structure underlying the standard model of particle physics

Shane Farnsworth (MPI for Gravitational Physics, Golm)

Many patterns and features in our current models of physics remain deeply mysterious. What determines the symmetries and particle content we observe in experiment for instance? Alain Connes has argued... 

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07.02.2019, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Short course on Lévy Processes - Part 2

Ester Mariucci

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Part 2: Statistics for jump processes

In the second part of the mini course, we will discuss how to estimate the Lévy measure from... 

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07.02.2019, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Multiplikative Sequenzen 2

Andreas Hermann

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07.02.2019, 17:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Joint Seminar

Hanne Hardering

17:00Hanne HardeningGeodesic surface finite elements

We study the discretization of maps from a smooth embedded hypersurface into a smooth Riemannian manifold. The discretization is given by a... 
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06.02.2019, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Aperiodic systems from a spectral point of view

Jean Bellissard (Georgia Institute of Technology Atlanta and WWU Münster), Hans Daniel Lenz (Universität Friedrich Schiller Jena)

14:00 Jean V. Bellissard: Self-adjoint Operators on aperiodic media

15:00 Tea and Coffee break

15:30 Hans Daniel Lenz: Discrete spectrum for topological dynamical systems

 

Jean V. Bellissard... 

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04.02.2019, 10:15  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

On perturbation of an ODE with non-Lipschitz coefficients by a small noise & On mutual behavior of solutions of an SDE with non-regular drift

Olga Aryasova & Andrey Pilipenko

10:15-11:00 : A. Pilipenko, On pertubertation of an ODE with non-Lipschitz coefficients by a small noise

We study the limit behavior of an ordinary differential equation with non-Lipschitz... 

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04.02.2019, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Stability and instability issues for Vlasov-like equations in gravitational kinetic theory

Mohammed Lemou (IRMAR Rennes, France)

I will start by giving a short overview of the history around stability and instability issues in gravitational systems driven by kinetic equations. Conservations properties and families of... 

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01.02.2019, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Pharmacometrics: Analysing and understanding variability and uncertainty in clinical data

Charlotte Kloft (FU Berlin)

For new medicines to be approved for therapeutic use, three internationally accepted criteria have to be met: efficacy, safety, quality. Yet, in drug development and drug therapy, the complex... 

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31.01.2019, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Short course on Lévy Processes - Part 1

Ester Mariucci

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Part 1: Why do we add jumps to the Brownian motion?

In the first part of the mini course we will focus on jump processes with independent... 

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31.01.2019, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Multiplikative Sequenzen 1

Andreas Hermann

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31.01.2019, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Infinite dimensionality of kernels of Neumann Laplacians induced by first-order elliptic operators

Lashi Bandara

We consider first-order elliptic differential operators on a compact manifold with boundary. We show that the kernel of the maximal extension, which coincides with the kernel of its associated Neumann... 

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31.01.2019, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Classical and Quantum impulsive Scattering

Herbert Balasin (TU Wien)

Using the framework of Colombeau's generalized functions, I will discuss the motion of both the classical as well as the quantum motion of a particle in an impulsive background.

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30.01.2019, 16:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Parabolic Harnack Inequality, Gaussian Estimates and Geometric Properties on Graphs

Christian Scholz

Consider a countable set and a weighted, uniformly locally finite graph. In his paper "Parabolic Harnack inequality and estimates of Markov chains on graphs", Delmotte proves that parabolic Harnack... 

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30.01.2019, 10:30 Uhr  –  *2.05.103*
Arbeitsgruppenseminar Analysis

Typed trees and their algebraic structures

Loïc Foissy (LMPA, Calais)

Typed trees are used by Bruned, Hairer, Zambotti in order to deal with stochastics PDE. We here explore the algebraic structures of these combinatorial objects: prelie products, operadic compositions,... 

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30.01.2019, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

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29.01.2019, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

Áron Szabo, Markus Röser

11:00Markus RöserSymplectic Vector Spaces, Room H2
13:30Áron SzaboSymplectic Differential Geometry, Room H127
15:00Markus RöserLagrangian Manifolds, Room H1240
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25.01.2019, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Circle and sphere bundles in noncommutative geometry

Francesca Arici (MPI Leipzig)

In this talk I will recall how Pimsner algebras of self-Morita equivalences can be thought of as total spaces of quantum circle bundles, and the associated six term exact sequence in K-theory can be... 

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24.01.2019, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Research data management

Z03: Tobias Scheffer, Hendrik Gessner

Project Z03

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

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24.01.2019, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Die Pontrjagin-Klassen

Lashi Bandara

mehr erfahren

24.01.2019, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Cauchy problem for the Dirac operator on globally hyperbolic manifolds with timelike boundary

Nadine Große (Freiburg)

We consider the Dirac operator on globally hyperbolic manifolds with timelike boundary and ask for well-posedness of the Cauchy initial-boundary value problem coupled to MIT-boundary conditions. This... 

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23.01.2019, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Differential operators on manifolds: where analysis meets geometry

Jan Slovák (Brno, Czech Republic), Nadine Große (Freiburg)

14:00 Nadine Große (Freiburg): Boundary value problems: an approach via bounded geometries
In this talk, we consider boundary value problems on domains with non smooth boundaries. For the Dirichlet... 

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21.01.2019, 16:15 - 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematik ... angewandt, abgewandt – und zugewandt

Prof. em. Dr. Wilfried Herget (Martin-Luther-Univ. Halle-Wittenberg)

… angewandt: Mathematik lernen – wozu soll das gut sein? Eine Antwort darauf ist ein anwendungs- und realitätsorientierter Mathematikunterricht. Er zeigt: Mathematik ist nützlich.
… abgewandt: Doch... 

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21.01.2019, 10:15  –  Golm, Haus 9, Raum 2.22
SFB-Seminar

Nash Equilibria for Stochastic Games with Singular Control

Jodi Dianetti

A singular stochastic control problem typically describes the situation in which an agent has to choose optimally an irreversible strategy in order to minimize a certain cost functional. In this talk... 

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19.01.2019, 10:00 Uhr  –  Haus 9
Schülerförderung

Schülerförderung 19.01.2019

Joachim Gräter, Sebastian Reich

Klasse 9/10: Prof. Joachim Gräter: Zahlenkongruenzen / Chinesischer Restsatz

Frau Noether möchte ihre 21 Schüler großzügig mit Schokoriegeln belohnen. Sie kauft Tüten von Schokoriegeln, bei... 

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18.01.2019, 10:15-11:45  –  Haus 9, Raum 0.14
SFB-Seminar

Uniform estimates for particle filters

Pierre del Moral (INRIA Bordeaux)

This talk is concerned with the long time behavior of particle filters and Ensemble Kalman filters. These filters can be interpreted as mean field type particle interpretation of the filtering... 

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18.01.2019, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

On the composition of iterated integrals from a Hopf algebraic viewpoint

Kurusch Ebrahimi-Fard (NTNU Trondheim, Norway)

We will discuss a Faà di Bruno type Hopf algebra encoding the composition of Chen-Fliess series of iterated integrals.

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18.01.2019, 9:30 Uhr  –  Haus 9, Raum: 2.22
Arbeitsgruppenseminar Analysis

Renormalization loop

Alessandra Frabetti (Université Lyon 1)

In perturbative quantum field theory, the renormalization group is a  group of formal diffeomorphisms in the powers of the coupling  constant, with coefficients built on the counterterms of divergent... 

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17.01.2019, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Drift and diffusion estimation in stochastic differential equations

A01: Wilhelm Stannat, Markus Reiß

Project A01

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

17.01.2019, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Die Chern-Klassen

Lashi Bandara

mehr erfahren

17.01.2019, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Asymptotically hyperbolic extensions of Riemannian manifolds

Penelope Gehring (Tübingen)

Mantoulidis and Schoen constructed smooth asymptotically flat initial data sets of dimension 3 with prescribed horizon boundary, whose mass can be made arbitrary close to the optimal value in the... 

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17.01.2019, 11:00  –  Albert-Einstein-Institut, Raum 1.63
Seminar Geometry and Physics

An elementary introduction to MHD equations

Huali Zhang (AEI)

Magnetohydrodynamics (MHD) is the study of the dynamics and magnetic properties of electrically conducting fluids. In this talk, we will give a brief derivation of MHD equations, and also introduce... 

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16.01.2019, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Eisenstein series and Selberg zeta function twisted by representations with non-expanding cusp monodromy

Ksenia Fedosova (Albert-Ludwigs-Universität Freiburg)

In this talk, we investigate the behavior of the Eisenstein series, or generalized eigenfunctions of the Laplace operator on hyperbolic surfaces. We twist them by a (possibly) non-unitary... 

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16.01. bis 16.01.2019, 16.00  –  Room 2.22

Model reduction in pharmacometrics

Undine Falkenhagen

mehr erfahren

14.01.2019, 10:15  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Sharp phase transition for the Widom-Rowlinson model

Dr. Pierre Houdebert

The Widom-Rowlinson model is formally defined as two homogeneous Poisson point processes forbidding the points of different type to be too close. For this Gibbs model the question of uniqueness/... 

mehr erfahren

14.01.2019, 15:15-16:45  –  Haus 9, Raum 0.13
SFB-Seminar

Deterministic Sequential Monte Carlo for non-Gaussian elliptic problems

Sangeetika Ruchi (Centrum Wiskunde & Informatica, Amsterdam)

Sequential Monte Carlo methods (SMC) are typically stochastic. Ensemble Transform Particle filter (ETPF) is a deterministic SMC method. It, however, still fails for strongly nonlinear problems, since... 

mehr erfahren

11.01.2019, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Cyclic homology and cyclic operads

Niels Kowalzig (Università di Napoli Federico II)

In this talk, we will give an overview of how typical ingredients of cyclic homology theories and (algebraic) operads naturally appear when looking for (higher) brackets on certain cohomology groups,... 

mehr erfahren

11.01.2019, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Specification of the Near-Earth Space Environment using Data Assimilation Techniques

Ludger Scherliess (Utah State University)

Over the past decades physics-based data assimilation models have been used in many areas of science and engineering and have found extensive use in meteorology and oceanography. More recently, data... 

mehr erfahren

10.01.2019, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Nonlinear statistical inverse problems with random observations

A04: Markus Reiß, Wilhelm Huisinga

Project A04

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

10.01.2019, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Komplexe Vektorbündel

Michael Jung

mehr erfahren

10.01.2019, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Causal variational principles and energy estimates for linearized fields

Felix Finster (Regensburg)

After a brief general introduction to causal fermion systems and causal variational principles, the concept of linearized fields is introduced. Formulating the Cauchy problem locally in so-called... 

mehr erfahren

10.01.2019, 11:00  –  Albert-Einstein-Institut, Raum 1.63
Seminar Geometry and Physics

Asymptotically flat vacuum asymptotics: Things that remain to be done

Helmut Friedrich (AEI)

In the last 30 years an enormous amount of work has been done on the existence and global structure of asymptotically flat solutions to Einstein's field equations. Many of these contributions are in... 

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10.01.2019, 16:15  –  Free University of Berlin, Arnimallee 6, SR 025/026
Seminar "Topics in Geometric Analysis"

Joint Seminar

Piotr Bizoń, Niels Martin Møller

16:15Piotr BizońResonant dynamics in spatially confined Hamiltonian systems

The long-time behavior of nonlinear dispersive waves subject
to spatial confinement can be very rich and complex because,... 
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09.01.2019, 16:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Neumann problems on graphs

Michael Schwarz

Abstract

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08.01.2019, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

Philipp Bartman, Sari Ghanem, Philip Thonke

11:00Philipp BartmanOscillatory Integrals
13:00Sari GhanemLocal Theory for Fourier Integral Operators
14:30Philip ThonkePseudodifferential Operators
15:30Oliver Lindblad-PetersenExample: Wave Equation
mehr erfahren

07.01.2019, 16:15 - 17:45  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

BeGREIFen des Integralbegriffs: Montessorische Lernmaterialien zur handlungs- und vorstellungsorientierten Erarbeitung der Integralrechnung

Annalisa Drösemeier, StRin, M. Ed. (Universität Bayreuth)

Die Integralrechnung zählt sicherlich zu den anspruchsvolleren Themengebieten der Schulmathematik. Nicht
selten beschränkt sich der Analysisunterricht dabei auf Formeln und Kalküle, die auswendig... 

mehr erfahren

20.12.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Hindernistheorie

Claudia Grabs

mehr erfahren

19.12.2018, 16:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Spectral asymptotics of Robin Laplacians on polygonal domains

Magda Khalile (Leibniz Universität Hannover)

Abstract

mehr erfahren

19.12. bis 19.12.2018, 16.00  –  Room 2.22

Blood Cells and Differential Geometry

Alexander Friedrich

Blood cells and their iconic discoid shape can modelled by closed surfaces minimizing an associated bending energy. I will give a brief introduction to immersed surfaces and discuss what kind of... 

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19.12.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

A Rough Path Perspective on Renormalization

Rosa Preiss (TU Berlin)

This talk is based on a joint paper with Yvain Bruned, Ilya Chevyrev and Peter Friz. There, we revisit (higher-order) translation operators on rough paths, in both the geometric and branched setting.... 

mehr erfahren

17.12.2018, 16:15 - 17:45  –  Universität Potsdam, Institut für Mathematik, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Multimodal Algebra lernen - Einblicke in ein interdisziplinäres Technologieprojekt

Prof. Dr. Angelika Bikner-Ahsbahs (Universität Bremen)

Algebra gehört zum Schlüsselbereich mathematischen Arbeitens, der in der Sekundarstufe erlernt wird, aber
für alle weiterführenden Inhaltsbereiche mathematischen Handelns relevant ist. Dabei tun sich... 

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17.12.2018, 10:15  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Parameter estimation for SPDEs based on discrete observation in time and space

Florian Hildebrandt (Hamburg)

Stochastic partial differential equations (SPDEs) are becoming increasingly popular for modeling phenomena from the natural sciences and finance and thus require statistical methods for their... 

mehr erfahren

14.12.2018, 10:15-11:45  –  Haus 9, Raum 0.13
SFB-Seminar

Validity of linear response theory in high-dimensional deterministic dynamical systems

Caroline Wormell (University of Sydney and SFB visiting PhD research fellow)

Many physical problems, most importantly the quantification of climate change, involve estimating the response of a deterministic chaotic dynamical system's statistical equilibrium to perturbations... 

mehr erfahren

13.12.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Ensemble Kalman filtering

A02: Wilhelm Stannat, Jana de Wiljes, Sebastian Reich

Project A02

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

13.12.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Die Euler-Klasse

Sebastian Hannes

mehr erfahren

13.12.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Spacetime diffeomorphisms as matter fields

Dmitri Vassiliev (UCL London)

We work on a 4-manifold equipped with Lorentzian metric g and consider a volume-preserving diffeomorphism which is the unknown quantity of our mathematical model. The diffeomorphism defines a... 

mehr erfahren

13.12.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

The Berry Phase: Introduction and Examples

Lukas Böke (AEI - ETH)

The Berry phase was introduced by Michael Berry in the 80s, and a little later an elegant description in terms of holonomy was observed by Barry Simon. We introduce the Berry phase and the Berry-Simon... 

mehr erfahren

13.12.2018, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Joint Seminar

Felix Lubbe and Andreas Hermann

16:15-17:15Felix Lubbe
(Universität Hamburg)
A Stability result for Mean Curvature Flow in Lorentzian Manifolds
Given a Riemannian manifold M with bounded geometry, we consider its (graphical)
mean... 
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12.12.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

Mathematik & Geschlecht

Kerstin Palm (HU Berlin), Renate Tobies (Friedrich-Schiller-Universität, Jena)

14:00 Renate Tobies, Friedrich-Schiller-Universität, Jena

Klein, Hilbert und die Förderung von Frauen in der Mathematik, nebst zu überwindenden Problemen

Mit Felix Klein und David Hilbert entstand... 

mehr erfahren

10.12.2018, 16:15 - 17:45  –  Universität Potsdam, Institut für Mathematik, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Designing a gesture-based app to support multiplicative thinking: pedagogical issues, and early results

Prof. Dr. Nathalie Sinclair (Simon Fraser University, Kanada)

Multiplication is often taught as repeated addition, especially in the early years of school, which leads to challenges for students when they encounter situations in which they have to think... 

mehr erfahren

08.12.2018, 10:00 Uhr  –  Haus 9
Schülerförderung

Schülerförderung 8.12.2018

Axel Brückner, Jan Metzger

Klasse 9/10: Dr. Axel Brückner: Kegelschnitte

Bei Kegelschnitten handelt es sich um ausgesprochen schöne geometrische Gebilde, die für die Lösung vieler technischer Probleme eine große Bedeutung... 

mehr erfahren

07.12.2018, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Application of Hopf Algebras in the Renormalization of Gauge Theories

Henry Kißler (Humboldt-Universität zu Berlin)

The talk gives a broad overview about the Hopf-algebraic renormalization
of Gauge Theories. First, some basic facts about Hopf algebras and
perturbative Quantum Field Theory are recalled. Then, the Hopf... 

mehr erfahren

07.12.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Piecewise-deterministic Markov chain Monte Carlo

Arnaud Doucet (Oxford University)

A novel class of continuous-time non-reversible Markov chain Monte Carlo (MCMC) based on piecewise-deterministic processes has recently emerged. In these algorithms, the state of the Markov process... 

mehr erfahren

06.12.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Scene viewing - from basic models to tasks and individual differences

B05: Ralf Engbert, Tobias Scheffer

Project B05

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

06.12.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Eindeutigkeit der Stiefel-Whitney-Klassen

Andreas Hermann

mehr erfahren

06.12.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Wave equations with initial data on compact Cauchy horizons

Oliver Lindblad Petersen (Hamburg)

I will present a new existence and uniqueness result for wave equations with initial data on compact Cauchy horizons. As an application, we prove that any vacuum spacetime containing a compact... 

mehr erfahren

05.12.2018, 16:15 Uhr  –  Campus Golm, Haus 9, Raum
Forschungsseminar Diskrete Spektraltheorie

Inference of Phylogenetic Trees from Homology-Relations

Marc Hellmuth (Universität Greifswald)

Phylogenomics aims at finding plausible hypothesis about the evolutionary history of gene or species based on genomic sequence information. Genes are passed from generation to generation to the... 

mehr erfahren

04.12.2018, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

Alexander Friedrich, Sari Ghanem, Felix Lubbe

11:00Alexander FriedrichWavefront Set 2, Room 127
13:30Sari GhanemSymbols, Room 1528
15:00Felix LubbeDistributions defined by Oscillatory Integrals, Room 1528
mehr erfahren

30.11.2018, 10:15-11:00  –  Haus 9, Raum 0.14
SFB-Seminar

Neural Particle Filter and Beyond

Simone Surace (University of Zurich, ETH Zurich and University of Bern)

Perception can be seen as unconscious inference in a dynamically changing environment and formalized as nonlinear Bayesian filtering. A heuristic search for a scalable and biologically plausible... 

mehr erfahren

30.11.2018, 11:00-11:45  –  Haus 9, Raum 0.14
SFB-Seminar

Hawkes Processes with Sigmoid Gaussian Excitations

César Ojeda (Fraunhofer Institute for Intelligent Analysis and Information Systems IAIS)

We propose a Hawkes point process model for point processes where the excitations are modulated via a Gaussian process prior with a sigmoid link function. This formulation allows for a rich and... 

mehr erfahren

29.11.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Bayesian inference for cognitive models

B03: Ralf Engbert, Sebastian Reich

Project B03

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

29.11.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Universelle Bündel

Peter Grabs

mehr erfahren

29.11.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Radiation Memory

Jeff Winicour (University of Pittsburgh)

I will review results about linear and nonlinear radiation memory for electromagnetic and gravitational fields and present some new results for the collision of black holes.

mehr erfahren

29.11.2018, 16:15  –  Raum 0.14
Forschungsseminar Differentialgeometrie

Counter-intuitive existence and approximation results

Christian Bär

We will discuss a general approximation theorem which allows to solve overdetermined partial differential relations on an open dense subset of the domain. Let K be a real number. Applications will... 

mehr erfahren

28.11.2018, 16:30 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

A Riesz' Decomposition Theorem for Schrödinger Operators On Graphs

Florian Fischer (Universität Potsdam)

In the classical potential theory on Euclidean space and in the potential theory of transient Markov chains a unique decomposition of superharmonic functions in a harmonic and a potential part is... 

mehr erfahren

28.11.2018, 15:00  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

26.11.2018, 10:15  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Gaussian approximation for the small jumps of Lévy processes

Dr. Ester Mariucci

It is common practice to treat small jumps of a Lévy process as Wiener noise and thus to approximate their marginals by means of their corresponding Gaussian distributions.

However, results that allow... 

mehr erfahren

26.11.2018, 16:15 - 17:45  –  Universität Potsdam, Institut für Mathematik, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Natürlich diskret, aber beachte die Folgen – ein diskreter Zugang zu den Grundlagen der Analysis

Prof. Dr. Hans-Georg Weigand (Universität Würzburg)

Grenzwert- und Ableitungsbegriff sind zentrale Begriffe der Analysis. Die Diskussion um diese Begriffe durchzieht die gesamte Entwicklung der Mathematik und den Analysisunterricht in der Schule seit... 

mehr erfahren

23.11.2018, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Hodge decomposition theorem and solvability of elliptical boundary value problem: a comparative study

Ihsane Malass (Uni Potsdam)

We start by discussing Hodge theory on closed manifolds and the solvability of the differential equation du=f for f a given differential form. We then discuss the solvability of such problems on... 

mehr erfahren

22.11.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Cell motility: a showcase for data assimilation techniques

B02: Carsten Beta, Wilhelm Huisinga, Matthias Holschneider

Project B02

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

22.11.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Graßmann-Mannigfaltigkeiten

Saskia Roos

mehr erfahren

22.11.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Introduction to the Wigner transform

Jérémie Joudioux (AEI)

The Wigner transform was introduced at the beginning of the 30s to understand quantum corrections to classical statistical mechanics. It has then been used in optics to perform analysis in phase space... 

mehr erfahren

22.11.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

First-order elliptic boundary value problems for manifolds with non-compact boundary

Lashi Bandara

In this talk, I'll have a yarn about ongoing work on the question of BVPs for elliptic first-order BVPs where the boundary is non-compact, whenever the adapted operator on the boundary is essentially... 

mehr erfahren

21.11.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

Urn models and random walks

Paolo Dai Pra (Università degli Studi di Padova), Pierre-Yves Louis (Université de Poitiers)

14:00 Part I
Popular urn models:interaction and synchronization

(Pierre-Yves Louis)

Urn models  have found several applications, from adaptive
... 

mehr erfahren

19.11.2018, 12:15-12:45  –  Haus 9, Raum 2.22
Verteidigung der Masterarbeit / Defence of the Master thesis

Der Phasenübergang im zufälligen Erdös-Rényi-Graphen

Stella-Isabell Schmidt

Interessenten sind herzlich eingeladen

Prof. Dr. Sylvie Roelly, Dr. Tania Kosenkova

mehr erfahren

19.11. bis 12.12.2018
Veranstaltung der Fachschaft

Veranstaltungen der Fachschaft Mathematik/Physik

KiP Plätzchen backen - 11.12.2018, 18 Uhr - Küche vom Wohnheim Haus 7

Weihnachtsfeier - 12.12.2018, 18 Uhr - 2.28.0.102/104

mehr erfahren

17.11.2018, 10:00 Uhr  –  Haus 9
Schülerförderung

Schülerförderung 17.11.2018

Florian Fischer, Christian Scholz, Sylvie Roelly

Klasse 9/10: Florian Fischer / Christian Scholz: Wie viele Wächter braucht ein Museum?

Ein Museum beherbergt viele Kostbarkeiten und sollte dementsprechend gut bewacht werden. Jedoch ist es... 

mehr erfahren

16.11.2018, 10:15-11:00  –  Haus 9, Raum 0.14
SFB-Seminar

Hamiltonian Monte Carlo methods on Hilbert spaces

Jakiw Pidstrigach (University of Bonn)

When sampling measures on Hilbert spaces one option is to first discretize the space and then apply standard Markov Chain Monte Carlo methods. This works but the finer the discretization is, the... 

mehr erfahren

16.11.2018, 11:00-11:45  –  Haus 9, Raum 0.14
SFB-Seminar

A Causal approach to spring-to-summer climate variability in the Southern Hemisphere

Elena Saggioro (University of Reading, UK)

The coupling between stratospheric and tropospheric dynamics is currently a topic of major interest [1,2].  In the context of the Southern Hemisphere (SH) summertime, reanalysis data seem to... 

mehr erfahren

15.11.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Statistical modeling of earthquake occurence

B04: Gert Zöller, Matthias Holschneider

Project B04

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

15.11.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Erste Anwendungen von Stiefel-Whitney-Klassen

Sebastian Hannes

mehr erfahren

15.11.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Helicity and spin in Maxwell theory and linearized gravity

Sajad Aghapour (Sharif University of Technology, Tehran, and AEI)

The classical definitions of helicity, spin and orbital angular momenta of the electromagnetic field in free space have been improved in recent years in theoretical optics, stimulated by experiments... 

mehr erfahren

15.11.2018, 16:15  –  Free University of Berlin, Arnimallee 6, SR 025/026
Seminar "Topics in Geometric Analysis"

Joint Seminar

Cezar Oniciuc, Thomas Körber

16:15Cezar Oniciuc
(Iași)
Biharmonic immersions in spheres
We present unique continuation results for biharmonic maps and then we review classification results for biharmonic hypersurfaces in Euclidean... 
mehr erfahren

14.11.2018, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Kato-type curvature conditions and the Cheeger constant

Christian Rose (Technische Universität Chemnitz)

We show that if the negative part of the Ricci curvature of a compact manifold is in the Kato-class, the Cheeger constant of the manifold can be bounded below by a positive constant. This is obtained... 

mehr erfahren

13.11.2018, 11:00  –  University of Potsdam, Campus Golm, Building 9
Seminar "Nonlinear Wave Equations"

Fourier Integral Operators

Jan Metzger, Oliver Lindblad, Klaus Kröncke

11:00Jan MetzgerIntroduction and Distribution Densities, Room 0.12
13:30Oliver LindbladThe Method of Stationary Phase, Room 2.22
15:00Klaus KrönckeWavefront Set 1, Room 2.22
mehr erfahren

12.11.2018, 16:15 - 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Der Känguru-Mathematikwettbewerb: Wie stellt man gute Aufgaben?

Peat Schmolke (Känguru-Wettbewerb)

Aufgaben sind ein integraler Bestandteil der Mathematik. Studium oder Grundschule, zu Hause oder im Unterricht, leicht oder schwer: Aufgaben fragen Gelerntes ab, motivieren eine neue Theorie oder... 

mehr erfahren

09.11.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Image-based modelling of problems in cell motility

Till Brettschneider (University of Warwick, UK)

Mathematical modelling has been key to understanding the mechanics of cell shapes and the theoretical principles behind the complex spatio-temporal biochemical regulation of directed cell motility.... 

mehr erfahren

08.11.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Nonparametric Bayes and Gaussian processes

A06: Manfred Opper, Vladimir Spokoiny

Project A06

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

08.11.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Axiomatische Einführung von Stiefel-Whitney-Klassen

Michael Jung

mehr erfahren

08.11.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Positivity of scalar Hadamard-bisolutions for the wave equation on globally hyperbolic Lorentzian manifolds

Max Lewandowski

Let W be a scalar Hadamard-bisolution for the wave equation on a globally hyperbolic Lorentzian manifold M, then positivity W[φ,φ]≥0 only affects the symmetric part Ws of W, which is essentially... 

mehr erfahren

08.11.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Using the geometric optics approach to connect the Dirac equation to the linearised MPD equations

Lukas Böke (AEI)

We present a correspondence, established in papers by R. Rüdiger and J. Audretsch, between quantum mechanical equations of motion and classical equations of spinning massive particles in a... 

mehr erfahren

07.11.2018, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 2.09.1.10
Forschungsseminar Diskrete Spektraltheorie

Shnol type theorem for the Agmon ground state - the discrete setting

Siegfried Beckus (Universität Potsdam)

The celebrated Shnol theorem asserts that every polynomially bounded generalized eigenfunction for a given energy E associated with a Schrödinger operator H implies that E is in the L2-spectrum of H.... 

mehr erfahren

07.11.2018, *10:00 Uhr*  –  Haus 9, *Raum 2.11*
Arbeitsgruppenseminar Analysis

Arborified zeta values and shuffle of trees

Pierre Clavier (Uni Potsdam)

Arborified zeta values (AZVs) are a generalisation to trees of Multizeta values. They can be defined through the branching of the Euler-MacLaurin operator. We will review this construction without... 

mehr erfahren

05.11. bis 09.11.2018  –  Potsdam
Studienreise

Besuch von Studierenden aus Tilburg

Koordination: Claudia-Susanne Günther

Teilnehmende:20 holländische Lehramtsstudierende und Dozenten, Potsdamer Lehramtsstudierende des Faches Mathematik
Programm:Besuch von Mathematikdidaktikseminaren, Hospitation im Mathematikunterricht... 
mehr erfahren

05.11.2018, 10:15  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

A Large Deviations Approach to the Homogenization of Nonlocal PDEs

Dr. André de Oliveira Gomes

Homogenization theory studies, roughly speaking, the effects of high frequency oscillations on the coefficients of the solutions of partial differential equations (PDEs for short). In the simplest... 

mehr erfahren

01.11.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Konstruktion von Vektorbündeln

Claudia Grabs

mehr erfahren

01.11.2018, 11:00  –  Albert-Einstein-Institut, Raum 0.01
Seminar Geometry and Physics

Conservation laws for spinning fields

Lars Andersson

Noether's theorem states that for a Lagrangian field theory, symmetries of the action gives rise to conserved currents and charges. The most well-known symmetries are those which arise from Killing... 

mehr erfahren

01.11.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The stability of Minkowski space as a solution to the Einstein-Vlasov system

Jérémie Joudioux (Radboud University and AEI)

We discuss in this talk the proof of the stability of Minkowski space as a solution to the Einstein-Vlasov system. This proof is based on the construction of appropriate commutators with the... 

mehr erfahren

01.11.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Data Assimilation in the Earth Van Allen Radiation Belts

B06: Yuri Shprits

Project B06

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

29.10.2018, 10:15  –  Haus 9, Raum 2.11
Forschungsseminar Wahrscheinlichkeitstheorie

Statistical inference with optimal transport

Dr. Alexandra Suvorikova

Optimal transportation (OT) theory provides a powerful toolbox for data analysis in nonlinear spaces, where nonlinearity appears as an inevitable consequence of complexity of objects of interest (e.g.... 

mehr erfahren

26.10.2018, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The Tunneling Effect for Schrödinger operators on vector bundles

Elke Rosenberger (UP)

The well known theory of the Tunneling Effect for Schrödinger Operators with multi well potential can be generalized to operators acting on smooth sections of a vector bundle over a Riemannian... 

mehr erfahren

25.10.2018, 14:15  –  Haus 9, Raum 0.14
Seminar Geometrie

Charakteristische Klassen: Einführung in Vektorbündel

Peter Grabs

mehr erfahren

25.10.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Bandits

A03: Alexandra Carpentier

Project A03

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

24.10.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

Mathematical models of living tissues

Anna Marciniak-Czochra (Universität Heidelberg), Marie Doumic (Inria, CNRS and Sorbonne Université, Paris)

14:00 Marie Doumic: Modelling protein polymerisation: results and open questions
15:00 Tea and Coffee break
15:30 Anna Marciniak-Czochra: Mathematics of stem cells

Abstracts:

Marie Doumic: Modelling... 

mehr erfahren

19.10.2018, 14:00  –  Raum 2.22
Verteidigung der Masterarbeit / Defence of the Master thesis

Der Curl-Operator auf sphärischen Raumformen und isospektrale Beispiele

Jonas Rungenhagen

 

mehr erfahren

18.10.2018, 10:15  –  Haus 9, Raum 0.12
Forschungsseminar Wahrscheinlichkeitstheorie

Quasi-stationarity for one-dimensional renormalized Brownian motion

William Oçafrain

The goal is to approximate the law of a one-dimensional Brownian motion
conditioned not to cross fleeing boundaries when the time is big enough. To do so,
we will study the quasi-stationarity of the... 

mehr erfahren

18.10.2018, 14:15-17:45  –  Räume 2.14.0.47 und 2.28.0.108
Ringvorlesung Interdisziplinäre Mathematik

Poisson Point Processes

A05: Sylvie Roelly, Alexander Zass

Project A05

14:15-15:45 in Room 2.14.0.47
16:15-17:45 in Room 2.28.0.108

Exercises take place Mondays from 16:15-17:45 at 2.25.F0.01.

mehr erfahren

17.10.2018, 14:00 Uhr  –  Raum 2.09.2.22
Verteidigung der Dissertation / Defence of the PhD thesis

On the characterization of particular orthogroups by disjunctions of identities

Alexander Jende

mehr erfahren

15.10.2018, 12:15 Uhr  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Boundary Value Problems on Manifolds with Singularities

Sara Ali Ahmad Khalil

mehr erfahren

12.10.2018, 10:15-11:45  –  Haus 9, Raum 0.12
SFB-Seminar

Integrated approaches to investigate reactive transport processes in soil and groundwater

Irina Engelhardt (TU Berlin)

The presentation gives an overview about experimental and numerical approaches to analyze reactive transport processes in soils and groundwater. Examples of laboratory experiments, lysimeter and... 

mehr erfahren

10.10.2018, 10:15  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Gibbsian representation for point processes via hyperedge potentials

Benedikt Jahnel (WIAS)

Abstract: We consider marked point processes on the d-dimensional euclidean space, defined in terms of a quasilocal specification based on marked Poisson point processes. We investigate the... 

mehr erfahren

08.10.2018, ab 18 Uhr  –  Innenhof von Haus 28
Veranstaltung der Fachschaft

Ersti-Grillen

FSR MaPhy

Der FSR MaPhy lädt alle StudienanfängerInnen zu einem gemeinsamen Grillabend ein. Auch Studierende höherer Semester und Lehrende sind herzlich willkommen.

mehr erfahren

05.10.2018, 9:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Eilenberg's extension of algebras and noncommutative geometric standard model of particles

Christian Brouder (IMPMC, Paris VI)

mehr erfahren

04.10.2018, 10:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Locality in perturbative algebraic quantum field theory

Kasia Rejzner (University of York)

In this talk I will give an overview of perturbative algebraic quantum field theory (pAQFT), which is a mathematically rigorous framework to study perturbative QFT. In particular, I will focus on... 

mehr erfahren

01.10.2018, 9:00  –  Campus Golm, Haus 12, Raum 0.01
Informationsveranstaltung

Einführungsveranstaltung Mathematik Bachelor of Science und Bachelor of Education

Diese Einführungsveranstaltung richtet sich an alle Anfängerinnen und Anfänger der Studiengänge Mathematik Bachelor of Science und Bachelor of Education. Die Institutsleitung, die Lehrkräfte der... 

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13.09.2018, 16:15  –  Haus 9, Raum 2.22
Forschungsseminar Differentialgeometrie

Eigenvalue asymptotic for weighted Laplacians on rough Riemannian manifolds with boundary

Medet Nursultanov

 We investigate an asymptotic of the eigenvalues of the of the indefinite-weighted Laplace equation, $\Delta u = \lambda P u$, on the Riemannian manifold equipped with a rough metric. Namely, for the... 

mehr erfahren

11.09.2018, 11h00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

A survey of Wiles' proof of Fermat's Last Theorem

Filippo Nuccio (IUT and Institut Camille Jordan, Université de Saint-Étienne)

This will be a colloquium-style talk aimed at presenting to a non-specialist audience the main ideas beneath Wiles' proof of Fermat's Last Theorem (Ann. of Math, 1995). I will first introduce Frey's... 

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24.08.2018, 10:15-11:45  –  Campus Golm, Haus 27, Raum 0.01
SFB-Kolloquium

1st Kalman Lecture of the SFB: The Legacy of Rudolph Kalman

Andrew Stuart (California Institute of Technology, USA)

In 1960 Rudolph Kalman published what is arguably the first paper to develop a systematic, principled approach to the use of data to improve the predictive capability of mathematical models. As our... 

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20.07.2018, 10:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Linking Lie groupoids and infinite-dimensional Lie theory

Alexander Schmeding (TU Berlin)

Lie groupoids generalise Lie groups and the associated Lie
theory to regimes with symmetries which are not necessarily global in
nature (in the sense of being not induced by a Lie group action). It
is... 

mehr erfahren

20.07. bis 20.09.2018  –  Campus Am Neuen Palais, Haus 19
Workshop

Workshops zum Schreiben und Präsentieren

Das Zentrum für Sprachen und Schlüsselkompetenzen (Zessko) bietet während der Semesterferien zahlreiche Workshops zu den Themen Schreiben und Präsentieren an. In der Schreibwerkstatt wird das... 

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19.07.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The kernel of the Rarita-Schwinger operator on Riemannian spin manifolds

Uwe Semmelmann (Stuttgart)

The Rarita-Schwinger operator is a twisted Dirac operator. It has several  interesting applications in physics and differential geometry. In my talk I will introduce this operator, give some of its... 

mehr erfahren

18.07.2018, 14.00-16.30  –  Room 2.22
Doktorandentag

Math Ph.D. Day

Sebastian Hannes, Florian Fischer, Claudia Grabs and Corinna Maier

On this years Math Ph.D. Day we are proud to have four speakers from our institute. They will take us on a tour from Geometric Analysis over Graph Theory to System Biology.

 

14.00 - 14.30:... 

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18.07.2018, 12:30-13:45  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

16.07.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

How close are two Lévy(-type) processes?

Tania Kosenkova

Lévy(-type) processes arise naturally as models of a (state dependent) jump behaviour in a wide variety of situations in natural sciences and finance. The topic of this talk is induced by the need to... 

mehr erfahren

16.07.2018, 17:15-18:15  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Entropic and optimal transport

Christian Léonard (Paris)

The Schrödinger problem is an entropy minimization problem on a set of  path measures with prescribed initial and final marginals. It arises  from a large deviation principle for the empirical... 

mehr erfahren

13.07.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The Kapustin-Witten Equations

Chandrashekar Devchand (MPI, Golm)

Recent papers by  Uhlenbeck and  Taubes have raised expectations that the field theory equations discussed by Kapustin and Witten in 2006 have a significance for  complex four-manifolds analogous to... 

mehr erfahren

13.07.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

A review of the Epidemic Type Aftershock Sequences (ETAS) model: 30 years of modeling seismicity

Maximilian Werner (University of Bristol, UK)

Earthquakes seldom come alone. They occur in temporal and spatial clusters, occasionally preceded by foreshocks, always followed by aftershocks, and sometimes they occur in complex multi-mainshock... 

mehr erfahren

13.07.2018, 14:00  –  Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Analysis of the Teukolsky equations on slowly rotating Kerr spacetimes

Siyuan Ma

 

mehr erfahren

13.07.2018, 16:00  –  Haus 10, Raum 0.25
Verteidigung der Dissertation / Defence of the PhD thesis

The role of Trapping in Black Hole Spacetimes

Claudio Paganini

 

mehr erfahren

12.07.2018, 16:15  –  Haus 9, Raum 2.09.0.14
Forschungsseminar Wahrscheinlichkeitstheorie

Random dynamics for hard spheres

Myriam Fradon (Lille)

What is the closest packing for a finite number of non-overlapping  spheres with equal radius ? The answer to this apparently simple  question in only known for very small systems, despite the... 

mehr erfahren

12.07.2018, 16:00  –  Neues Palais, House 12, Room 0.39
Öffentlicher Vortrag

Science at Risk - Scholars at Work

Refugee academics present their scientific work and research in a multidisciplinary lecture series.

19 April: Opening: Screening of the documentary "Science in Exile" by Nicole Leghissa (The World... 

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12.07.2018, 16:15  –  Free University of Berlin, Arnimallee 6, SR 025/026
Seminar "Topics in Geometric Analysis"

Joint Seminar

Nikolaos Roides; Adrian Spener

16:15 Nikolaos Roidos
(Hannover)
Conic manifolds under the Yamabe flow

We consider the unnormalized Yamabe flow on manifolds with conical singularities. Under certain geometric assumption on the... 

mehr erfahren

12.07.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The Yamabe problem on Lorentzian manifolds

Viktoria Rothe

 In this talk we will consider the Yamabe equation on 4-dimensional globally hyperbolic Lorentzian manifolds. We will discuss some different approaches how one could get a positive global solution to... 

mehr erfahren

11.07.2018, 14.00  –  Haus 9, Raum 2.22
Institutskolloquium

Statistics in interactions with other fields of mathematics

Marc Hoffmann (Univ. Paris-Dauphine), Guillaume Sagnol (TU Berlin)

14:00 Marc Hoffmann (Univ. Paris-Dauphine): Age-structured model in a large population: combining a statistical analysis and PDEs
15:00 Tea and Coffee break
15:30 Guillaume Sagnol (TU Berlin):... 

mehr erfahren

11.07.2018, 17:00  –  Campus Golm, Haus 28/29
Institutsveranstaltung

Absolventenfeier 2018 und Institutsfest

17:00 Uhr: Absolventenfeier (Haus 29)
18:00 Uhr: Institutsfest (Innenhof Haus 28)

mehr erfahren

09.07.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Resonances

Markus Klein

TBA

mehr erfahren

06.07.2018, 10:15-11:45  –  Haus 9, Raum 0.13
SFB-Seminar

Balancing robustness and accuracy in high resolution hydrological models

Sabine Attinger (Universität Potsdam)

Anthropogenic warming is anticipated to impact the hydrological cycle tremendously in the future. However, projections are accompanied by large uncertainty due to varying estimates of future warming... 

mehr erfahren

06.07.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Index Theory and the essential spectrum

Alan Carey (ANU, Adelaide)

In condensed matter theory physicists have speculated on the relationshipbetween spectral flow and the Fredholm index in situations where the operators in question have essential spectrum and may... 

mehr erfahren

05.07.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Linearized elastic shell theory

Claudia Grabs

The total elastic energy is an extrinsic geometric functional for an embedding of some body manifold into an ambient space. We want to compute the first and second variation of this extrinsic... 

mehr erfahren

02.07.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Forschung der AG Mathematische Physik I

Elke Rosenberger

TBA

mehr erfahren

29.06.2018, 10:30 uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Nonlocal Quantum Effective Actions and Weyl Anomalies

Teresa Bautista (Max Planck Institute for Gravitational Physics, Golm)

The quantum effective action is a functional of the matter and gauge fields of a theory. It is a powerful object because the full quantum physics of the theory can be derived from it by doing simple... 

mehr erfahren

28.06.2018, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Joint Seminar

Yuxin Ge and Lorenzo Mazzieri

16:15  
 
Yuxin Ge     
(Toulouse)
Compactness of conformally compact Einstein manifolds in dimension 4

We show some compactness result of 4-dimensional conformally compact Einstein manifolds under the... 
mehr erfahren

25.06.2018, 16:15  –  Universität Potsdam, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Nutzungsweisen von Grundschulkindern bei der Verwendung von Tablet-Apps

Dr. Daniel Walter (TU Dortmund)

Der Einsatz von Tablet-Apps im Grundschulunterricht stellt ein äußerst kontrovers diskutiertes und von der Mathematikdidaktik zugleich vernachlässigtes Forschungsfeld dar. Weitgehend unergründet ist... 

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22.06.2018, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

The Characteristic Cauchy Problem

Sari Ghanem, Klaus Kroencke, Philip Thonke

TBA

mehr erfahren

22.06.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Numerical Methods in Visual Computing: what we can learn from each other

Uri Ascher (UBC Vancouver)

Visual computing is a wide area that includes computer graphics and image processing, where the “eyeball-norm” rules. I will discuss two case studies involving numerical methods and analysis applied... 

mehr erfahren

20.06.2018, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Bridges between symplectic geometry and combinatorics of polytopes

Silvia Sabatini, Milena Pabiniak (Uni Köln)

14:00 Silvia Sabatini (Köln): 12, 24 and beyond: A bridge from reflexive Polytopes to symplectic Geometry
15:00 Tea and Coffee break
15:30 Milena Pabiniak (Köln): How to distinguish between symplectic... 

mehr erfahren

18.06.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Non classical analysis: from rough paths to regularity structures

Youness Boutaib

TBA

mehr erfahren

18.06.2018, 16:15  –  Universität Potsdam, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Tätigkeitstheorie und kulturhistorische Didaktik

Prof. Dr. Hartmut Giest (Universität Potsdam)

In vielen aktuellen Arbeiten zur Lehr-Lern-Forschung wird der Bezug zu Vygotskij (vor allem mit Blick auf das Konzept der Zone der nächsten Entwicklung) hergestellt. Dennoch sind – nicht nur... 

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14.06.2018, 16:00  –  Haus 9, Raum 2.09.0.14
Forschungsseminar Wahrscheinlichkeitstheorie

Overview on stochastic models, McKean-Vlasov dynamics and their applications.

Jean-Francois Jabir (Moskau)

Abstract: This seminar aims to give a broad and straightforward presentation on fundamental aspects related to the theory and application of continuous-time stochastic ... 

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14.06.2018, 16:15  –  Free University of Berlin, Arnimallee 6, SR 025/026
Seminar "Topics in Geometric Analysis"

Joint Seminar

Andreas Gastel and Olaf Müller

16:15  
  
Andreas Gastel
(Duisburg)   
p-harmonic maps and Cosserat elasticity

For minimizers in a geometrically nonlinear
Cosserat model for micropolar elasticity of continua, we prove interior... 
mehr erfahren

14.06.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Outermost apparent horizons with non-trivial topology

Mattias Dahl

It is a well known fact that outermost apparent horizons must allow metrics of positive scalar curvature. It is conceivable that this is also the only restriction on a bounding manifold to be an... 

mehr erfahren

13.06.2018, 14:30  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

11.06.2018, 16:15  –  Universität Potsdam, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Together We’re Strong – Parallelisiertes Rechnen in der Mathematik-Visualisierung

Prof. Dr. Jürgen Richter-Gebert (TU München)

“Viele Hände machen ein schnelles Ende” pflegte meine Großmutter zu sagen, wenn es ans Abwaschen ging. Dieser Grundsatz des Parallelprocessing gilt ebenso, wenn man Berechnungen auf die Graphikkarte... 

mehr erfahren

08.06.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rigidity of secondary invariants via equivariant coarse geometry

Indrava Roy (IMSc Chennai, zZ. Potsdam)

We describe how equivariant coarse geometry is employed in the study of rigidity properties of secondary invariants of Dirac operators for a Galois covering. We shall also discuss generalizations of... 

mehr erfahren

04.06.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Finite- and infinite-dimensional random dynamics and their equilibrium states

Sylvie Roelly

We first consider random diffusions with geometrical constraints and the problem of their convergence towards stationary states. Then we extend the framework to infinitely many interacting diffusions.... 

mehr erfahren

04.06.2018, 16:15  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Aspects of automated observation of dynamic constructions

Dr. Zlatan Magajna (Universität Ljubljana)

The use of dynamic geometry systems in school geometry affects working practices in this subject. Several processes, e.g. executing constructions and measurements, checking properties, simulating, and... 

mehr erfahren

01.06.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Baum-Connes conjecture, coarse geometry, and secondary invariants

Indrava Roy (IMSc Chennai, zZ Potsdam)

The Baum-Connes conjecture arises out of index theory and has deep consequences in geometric topology as well as analysis. Coarse geometry also seeks to capture index theoretic information in the... 

mehr erfahren

01.06.2018, 10:15-11:45  –  Haus 9, Raum 0.13
SFB-Seminar

Measures for diffusion, ergodicity & ageing

Ralph Metzler (Universität Potsdam)

After a short introduction into the history of Brownian motion I will present the stochastic motion in several physical systems, in particular with respect to the typically measured quantities & how... 

mehr erfahren

31.05.2018, 10:15-11:45  –  Campus 2 Haus 27 Raum 0.29/30
Forschungsseminar Wahrscheinlichkeitstheorie

A stochastic model for population evolution with genocide incidence

Samuel Sindayigaya (Kigali)

Abstrasct:

We study Birth-Death-Immigration-Emigration (BDIE) Processes with genocide incidence via their probability generating functions. The influence of genocide incidence, as a partial... 

mehr erfahren

31.05.2018, 16:15
Forschungsseminar Differentialgeometrie

First-order elliptic boundary value problems beyond self-adjoint induced boundary operators

Lashi Bandara

The Bär-Ballmann framework is a comprehensive framework for considering elliptic boundary value problems for first-order elliptic operators on manifolds with compact and smooth boundary, provided... 

mehr erfahren

28.05.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Locality and renormalisation

Sylvie Paycha

TBA

mehr erfahren

28.05.2018, 16:15  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Wie Gebärdensprache mathematische Denk- und Lernprozesse beeinflusst – und was wir daraus lernen können

Dr. Christina Krause (Universität Duisburg-Essen)

Wie lernen gehörlose Schülerinnen und Schüler Mathematik? Wie konzeptualisieren sie mathematische Ideen? Welche Rolle spielt Gebärdensprache dabei? Und wie kann die Beantwortung dieser Fragen uns... 

mehr erfahren

25.05.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

Approximate Kernel Embeddings of Distributions

Dino Sejdinovic (University of Oxford, UK)

Kernel embeddings of distributions and the Maximum Mean Discrepancy (MMD), the resulting probability metric, are useful tools for fully nonparametric hypothesis testing and for learning on... 

mehr erfahren

25.05.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Higher brackets on cyclic and negative cyclic (co)homology

Niels Kowalzig (Università di Napoli Federico II)

In this talk, we will embed the degree -d bracket on the equivariant homology of loop spaces developed by Chas-Sullivan and Menichi on negative cyclic cohomology groups as well as the dual bracket... 

mehr erfahren

25.05.2018, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

The Characteristic Cauchy Problem

Jan Metzger, Felix Lubbe, Oliver Lindblad

11:00Jan Metzger (Potsdam)The Cauchy Problem in General Relativity 2
14:00Felix Lubbe (Hamburg)Null Geometry 2
15:30Oliver Lindblad (Potsdam)Randall's Approach to the characteristic Problem 2
mehr erfahren

24.05.2018, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Joint Seminar

Tobias Marxen and Volker Branding

16:15  
       
Tobias Marxen
(Oldenburg)
Ricci Flow on Warped Product Manifolds    
                     

The Ricci flow has become famous via the solution of Thurston's
geometrization conjecture and... 

mehr erfahren

24.05.2018, 16:15
Forschungsseminar Wahrscheinlichkeitstheorie

Bandit problems

Pierre Ménard

First Talk

Title: An introduction to best arm identification in the bandit problems

Abstract: In this talk we will introduce the bandit setting and in particular the problem of best arm... 

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24.05.2018, 16:00 bis 19:00  –  2.09.0.12
Workshop

Begegnungen mit Mathematik – Workshop zu Mathelust und Mathefrust

Claudia-Susanne Günther, Peter Klöpping, Karen Reitz-Koncebovski

Anmeldung: Bei Interesse melden Sie sich bitte bis zum 17. Mai an unter karen.reitz-koncebovski@uni-potsdam.de

Wie ist Ihnen Mathematik bisher begegnet? Wie begegnen Sie ihr heute? Kann Ihnen die... 

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23.05.2018, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Zeta functions everywhere!

Pierrette und Philippe Cassou-Noguès (University of Bordeaux)

14:00: Philippe Cassou-Nogues (Bordeaux): Zeta functions and Galois module structures.
15:00: Tea and Coffee break
15:30: Pierrette Cassou-Nogues (Bordeaux): Zeta functions and roots of Bernstein... 

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23.05.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Discrete group actions and a weak form of the Baum--Connes conjecture

Sara Azzali (Uni Potsdam)

The Baum--Connes conjecture can be seen as a far reaching generalisation of the Atiyah--Singer index theorem. Given a locally compact group G, the conjecture predicts an isomorphisms between a... 

mehr erfahren

17.05.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Boundary Value Problems for the Lorentzian Dirac Operator

Sebastian Hannes (Potsdam)

We will discuss some progress and some failures in the treatment of (Pseudo-)local boundary conditions for the Lorentzian Dirac operator on a globally hyperbolic spacetime.

mehr erfahren

14.05.2018, 16:15  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Welches Verständnis der Ableitung benötigen Studierende der Wirtschaftswissenschaften?

Frank Feudel (Humboldt-Universität zu Berlin)

Viele Schüler werden später als Studierende erneut mit Mathematik konfrontiert. Dies gilt nicht nur für die Studierenden der MINT-Studiengänge, sondern auch die Studierenden der... 

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14.05.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Improving Hardy's inequality

Matthias Keller

About 100 years ago Hardy proved his famous inequality. Since then such inequalities have been proven in various contexts. We address the question of not only proving a sharp constant but also the... 

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11.05.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Varieties, Signature Tensors, Rough Paths

Peter Friz (TU and WIAS, Berlin)

The signature of a parametric curve is a sequence of tensors whose entries are iterated integrals. This construction is central to the theory of rough paths in stochastic analysis. It is here examined... 

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07.05.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

How to plant a bubble tree

Alexander Friedrich

TBA

mehr erfahren

05.05.2018, 13:00-20:00  –  Campus Golm, Haus 28, Foyer rechts und Raum 0.104
Institutsveranstaltung

Potsdamer Tag der Wissenschaften 2018

Der Potsdamer Tag der Wissenschaften 2018 findet dieses Jahr auf dem Campus Golm statt. Auch das Institut für Mathematik ist vertreten. Versuchen Sie sich im Programmieren mit den Robotern Dash und... 

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04.05.2018, 14:00  –  Auditorium maximum, Am Neuen Palais
Institutsveranstaltung

Euler-Vorlesung: Sailing Through Data: Discoveries and Mirages

Emmanuel Candès (Stanford University)

Programm:

  1. Prof. Peter Ullrich (U Koblenz-Landau): Berlin 1828-1855: "von dem anderen Dirichletschen Prinzipe [...] datiert die Neuzeit in der Geschichte der Mathematik"
  2. Prof. Emmanuel Candès (Stanford... 
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04.05.2018, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

The Characteristic Cauchy Problem

Alexander Friedrich, Jan Metzger, Florian Hanisch

11:00Alexander FriedrichNull Geometry 1
13:30Jan MetzgerThe Cauchy Problem in General Relativity 1
15:00Florian HanischRandall's Approach to the characteristic Problem 2
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03.05.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Gromov’s weak flexibility lemma

Bernhard Hanke (Augsburg)

Jet bundles and partial differential relations allow a coordinate free characterisation of many topological and geometric structures, including immersions and submersions, symplectic and contact... 

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03.05.2018, 16:15  –  Haus 9, Raum 2.09.0.14
Forschungsseminar Wahrscheinlichkeitstheorie

Thermodynamic limit and phase transitions in non-cooperative games: some mean-field examples.

Paolo Dai Pra (Padova)

Abstract:

In stochastic dynamics inspired by Statistical Mechanics the interaction between different particles, or agents, is usually expressed as a given... 

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02.05.2018, 14:30 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

30.04.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Variational Problems in Extrinsic Geometry Part I: The Isoperimetric Problem

Jan Metzger

TBA

mehr erfahren

27.04.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The spectral Flow of a family of Toeplitz operators

Maxim Braverman (Northeastern University)

We show that the (graded) spectral flow of a family of Toeplitz operators on a complete Riemannian manifold is equal to the index of a certain Callias-type operator. When the dimension of the manifold... 

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27.04.2018, 10:15-11:45  –  Haus 28, Raum 0.108
SFB-Kolloquium

On periodic signals in stochastic Hodgkin-Huxley models

Reinhard Höpfner, Universität Mainz

We consider a stochastic Hodgkin-Huxley model where dendritic input –modelled as an autonomous SDE which depends on a deterministic T-periodic signal t→S(t) encoded in its drift– is the only source of... 

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26.04.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The Atiyah-Patodi-Singer index on manifolds with non-compact boundary

Maxim Braverman (Northeastern Univ., Boston, USA)

We study the index of the APS boundary value problem for a strongly Callias-type operator D on a complete Riemannian manifold M. We use this index to define the relative eta-invariant of two strongly... 

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26.04.2018, 16:15  –  Haus 9, Raum 2.09.014
Forschungsseminar Wahrscheinlichkeitstheorie

The First Exit Time Problem in the small noise limit

André de Oliveira Gomes

It is our intention to describe the first exit time problem for an ordinary differential equation (ODE) perturbed by additive noise. We consider a dynamical system described by the ODE <tex>$\dot X_t=... 

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26.04.2018, ab 15:00 Uhr  –  Campus Golm, Haus 25, Raum F.0.01
Institutsveranstaltung

Leibniz-Kolleg Potsdam 2018: Künstliches Leben

Prof. Dr. Petra Schwille, Prof. Dr. Reiner Anselm

Programm:

09:45-12:15 Uhr: Einführungsvorträge

ab 15:00 Uhr: Hauptvorträge

  • Gibt es eine kleinste Form des Lebens?
    Prof. Dr. Petra Schwille
    Direktorin am Max-Planck-Institut für Biochemie Martinsried,... 
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25.04.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

Mathematik Neu Denken

Rainer Danckwerts (Universität Siegen), Thomas Bauer (Universität Marburg)

Mathematiklehrerbildung Neu Denken

Abstract:

Die Probleme der universitären Lehrerbildung im Fach Mathematik für das gymnasiale Lehramt sind alt, gut beschrieben und vielfach unverändert aktuell.... 

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24.04.2018, 13:00  –  Haus 9, Raum 2.22
Gastvortrag

When do the spectra of self-adjoint operators converge?

Siegfried Beckus (Technion Haifa, Israel)

The central object of the talk are operator families indexed over a topological space where each single operator is self-adjoint and bounded. Thus, the spectrum of each single operator is a compact... 

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23.04.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

The Positive Mass Conjecture for closed Riemannian manifolds

Andreas Hermann

The Positive Mass Conjecture for asymptotically flat Riemannian manifolds is a famous problem in geometric analysis which has been open for a long time and seems to have been solved in recent work by... 

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20.04.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Renormalization of quantum field theory on Riemannian manifolds

Viet Dang Nguyen (Lyon I)

I will present an overview of results obtained with Bin Zhang (Sichuan University). We will start by giving a simple example which shows the necessity to subtract infinities in quantum field theory.... 

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19.04.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Symmetry of the Hadamard coefficients for a formally self-adjoint, normally hyperbolic operator on a globally hyperbolic Lorentzian manifold

Max Lewandowski

In the case of the Klein-Gordon field on Minkowski space a certain linear combination of the 4 standard fundamental solutions (advanced, retarded, Feynman and anti-Feynman propagator) yields a... 

mehr erfahren

16.04.2018, 16:00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Index theory on spacetimes

Christian Bär

We will give a survey on recent developments in index theory on spacetimes and discuss open problems.

mehr erfahren

13.04.2018, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

The Intrinsic Geometry of Scale-Free Networks

Tobias Friedrich (Hasso Plattner Institute)

The node degrees of large real-world networks often follow a power-law distribution. Such scale-free networks can be social networks, internet topologies or many other networks. There is, however, no... 

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13.04.2018, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Modular curvature and Hypergeometric functions

Yang Liu (MPI, Bonn)

In noncommutative geometry, an essential question is to extend the notion of metric and curvature in Riemannian geometry to noncommutative spaces in a operator theoretical framework. A fundamental... 

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13.04.2018, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

The Characteristic Cauchy Problem

Oliver Lindblad, Klaus Kroencke, Felix Lubbe

11:00Oliver LindbladIntroduction to the characteristic Cauchy Problem
13:30Klaus KroenckeIntroduction to the linear Problem 1
15:00Felix LubbeIntroduction to the linear Problem 2
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12.04.2018, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

A nonlocal generalization of Green hyperbolic operators

Christopher Fewster (York, England)

I describe how Bär's theory of Green hyperbolic partial differential operators can be generalized to nonlocal operators, where the nonlocality is confined to a compact spacetime region. Operators of... 

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13.03.2018, 13:00-14:00  –  Haus 28, Raum 0.104
SFB-Seminar

Composing stochastic quasi-Newton-Type algorithms

Thomas Schön (Uppsala University, Sweden)

In this talk I will focus on one of our recent developments where we show how the Gaussian process (GP) can be used to solve stochastic optimization problems. Our main motivation for studying these... 

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13.03. bis 16.03.2018  –  Campus Griebnitzsee
Workshop

Congrès MATh.en.JEANS 2018

Die Vereinigung MATh.en.JEANS veranstaltet jedes Jahr in den  französischen Schulen, Collèges und Gymnasien im Ausland sowie in  französisch- oder englischsprachigen Einrichtungen in Europa ... 

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09.03.2018, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

On stability of a class of Kalman-Bucy filters for systems with non-linear dynamics

Toni Karvonen (Aalto University, Finland)

This talk discusses stability of a class of Kalman-Bucy filters (including the classical extended Kalman-Bucy filter) for continuous-time systems with non-linear dynamics and linear measurements. The... 

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08.03.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

The Cauchy problem for the linearised Einstein equation and the Goursat problem for wave equations

Oliver Lindblad Petersen

mehr erfahren

02.03.2018, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

Improving MCMC samplers with spectral theory and optimal transport

Nikolas Nüsken (Imperial College London)

Markov Chain Monte Carlo methods are popular tools in Bayesian statistics and molecular dynamics to draw samples from a given probability distribution, using appropriate ergodic stochastic dynamics.... 

mehr erfahren

23.02.2018, 10:00-11:00  –  Haus 28, Raum 0.104
SFB-Seminar

Machine Learning for Sensor Fusion in Positioning and Navigation

Arno Solin (Aalto University, Finland)

Low-cost and noisy sensor sources in modern smartphones introduce both interesting possibilities for new applications, and challenges for inference methods needing to cope with the low-quality data.... 

mehr erfahren

23.02.2018, 11:00-12:00  –  Haus 28, Raum 0.104
SFB-Seminar

Data Assimilation in Autonomous Vehicles

Erin Linebarger (University of Utah)

Guidance of autonomous vehicles (AVs) poses different challenges for data assimilation methods than geophysical applications, requiring novel approaches. One promising approach is the use of a swarm... 

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20.02.2018, 9:00-13:00  –  Haus 9, Raum 2.22
Institutsveranstaltung

Network meeting of the Alexander von Humboldt Foundation

Program:

9 am: Words of welcome by Wilhelm Huisinga (Director of the Institute)

9:10 am: Presentation of the participants

9:30 - 11 am: Talks by Humboldt fellows

  • Ana Alonso Serrano (Spain): Quantum... 
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19.02. bis 23.02.2018  –  Campus Golm, Haus 10, Raum 0.25
Workshop

Geometric and Singular Analysis 2018

Workshop “Geometric and Singular Analysis”

 

https://www.math.uni-potsdam.de/professuren/analysis/GSA2018

 

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19.02.2018, 10:00 Uhr  –  Haus 9, Raum 2.22
Verteidigung der Masterarbeit / Defence of the Master thesis

Impact of Correlations of Parameter Estimates in Optimal Design

Florian Mikolajczak

mehr erfahren

14.02. bis 16.02.2018  –  Haus 9, Neues Palais
Forschungsseminar Wahrscheinlichkeitstheorie

Stochastic processes and statistical machine learning I

https://www.math.uni-potsdam.de/professuren/proba/cdfa2018/

mehr erfahren

09.02.2018, 10:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Algebraic structures of branched zeta values

Pierre Clavier (Potsdam)

Multi zeta values (MZVs) are algebra morphims for some combinatorial products on words. They have a rich algebraic structure and are generalised to trees by the branched zeta values (BZVs). So a... 

mehr erfahren

08.02.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Symmetric spaces

Florian Hanisch

[1, Ch. 7F]

mehr erfahren

08.02.2018, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

The supersymmetric nonlinear sigma model as a geometric variational problem: A status report

Volker Branding (Universität Wien)

We will discuss the functional of the supersymmetric nonlinear sigma model as a geometric variational problem. Its critical points couple the harmonic map equation to spinor fields, these became known... 

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07.02.2018, 14:15  –  Haus 9, Raum 2.22
Institutskolloquium

Probabilistic approaches to the evolution of some biological systems

Jean Bertoin (Universität Zürich), Anton Wakolbinger (Goethe-Universtität Frankfurt)

The colloquium begins at 14:15  with a talk

Large populations over many generations:

from Wright and Fisher to experimental evolution

by Anton Wakolbinger (Goethe University, Frankfurt)

Abstract:
... 

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05.02.2018, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Harmonic Maps with Values in Lie Groups

Chandrashekar Devchand

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

02.02.2018, 10:15-11:45  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Data Assimilation: Past, Present and Future

Michael Ghil (École Normale Supérieure, Paris)

We introduce basic ideas and methods of data assimilation in meteorology and oceanography, and illustrate their progress from numerical weather prediction to ocean and climate studies. Novel... 

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01.02.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Curvature of homogeneous spaces

Claudia Grabs

[1, Ch. 7C]

mehr erfahren

31.01.2018, 14.00  –  Haus 9, Raum 2.22
Doktorandentag

Meet and Greet - Ph.D. Edition

The ideal opportunity to get to know your fellow Ph.D students. (There will be cookies!)

mehr erfahren

29.01.2018, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Regularity of Weakly Stationary Maps with Values in the Sphere

Jan Metzger

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

26.01.2018, *11:00 Uhr*  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

On the construction of a perturbative Quantum Field Theory (after R. Borcherds)

Estanislao Herscovich (UJF Grenoble)

R. Borcherds has introduced a different point of view to formalise perturbative Quantum Field Theory (pQFT), which shares however several features with other well-known constructions in the literature... 

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26.01.2018, 10:15-11:15  –  Haus 14, Raum 4.15/16
SFB-Seminar

Multi-stability & Fixational Eye Movements: an energy potential modeling approach

Kevin Parisot (GIPSA-LAB Grenoble)

see also the list of SFB seminar events

mehr erfahren

26.01.2018, 9:15-10:15  –  Haus 9, Raum 2.22
SFB-Seminar

Financial Market History: Reflections on the Past for Mathematicians today

Nicole El Karoui (Ecole Polytechnique)

see also the list of SFB seminar events

mehr erfahren

26.01.2018, 10:45-11:45  –  Haus 28, Raum 0.104
SFB-Seminar

Minimax optimality in Robust Detection of disorder times in Doubly Stochastic Poisson Process

Nicole El Karoui (Ecole Polytechnique)

see also the list of SFB seminar events

mehr erfahren

25.01.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Riemannian homogeneous spaces

Christian Bär

[1, Ch. 7B, incl. proof of Thm. 7.19], see also [2, p. 176]

mehr erfahren

25.01.2018, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Global existence of wave maps and some generalizations on expanding spacetimes

Klaus Kröncke (Hamburg)

We prove the global existence of wave maps with small initial data on globally hyperbolic manifolds of arbitrary dimension which satisfy a suitable growth condition. In addition, we also prove a... 

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24.01.2018, 14:30 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

22.01.2018, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Lorentz Spaces / Wente Inequality refined

Sylvie Paycha / Florian Hanisch

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

19.01.2018, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

Generative Deep Learning

Sebastian Stober (Universität Potsdam)

A short introduction into Deep Learning will be followed by an overview on Deep Generative Models. This will include energy based models (Boltzmann Machines) and more recent developments with... 

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19.01.2018, *11:00 Uhr*  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Grothendieck in the 80's: A portrait of his mathematical testament

Alexander Cruz Morales (MPI Bonn and UNAL Bogotá)

Alexander Grothendieck was one of the most influential figures
in mathematics during the last century and his legacy will remain for
the next centuries. During the 80's he wrote a series of mathematical
... 

mehr erfahren

18.01.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Examples of homogeneous manifolds

Sebastian Hannes

[3, 3.65-3.68]

mehr erfahren

18.01.2018, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

The Yamabe problem on Lorentzian manifolds

Viktoria Rothe

We will consider the Yamabe Problem on globally hyperbolic spatially compact Lorentzian manifolds (M,g) of dimension 4: Given a Lorentzian metric g on M, find a metric conformal to g with constant... 

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18.01.2018, 16:00 - 20:00  –  Auditorium maximum, Campus Am Neuen Palais
Institutsveranstaltung

Siegerehrung der Mathematikolympiade, Regionalrunde

Programm:
16:00 - 17:30 Uhr: Klassen 3-5
18:00 - 19:30 Uhr: Klassen 6-12

mehr erfahren

17.01.2018, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

From Operators and Function Theory to Parabolic Problems: Semigroups everywhere

Wolfgang Arendt (Universität Ulm), Isabelle Chalendar (University Paris Est)

The colloquium begins at 14:00  with a talk

Composition operators on spaces of analytic functions: universality and asymptotics

by Isabelle Chalendar (University Paris Est)

Abstract:
Composition... 

mehr erfahren

15.01.2018, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Hardy Spaces

Markus Klein

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

12.01.2018, 10:15-11:45  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Pharmacometrics: Analysing and understanding variability and uncertainty in clinical data

Charlotte Kloft (FU Berlin)

mehr erfahren

11.01.2018, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Invariant differential operators

Vít Tuček (Prag)

It is well known that Laplace and Dirac operators on $\mathbb{R}^{p, q}$ admit strictly larger Lie algebra of symmetries than just the orthogonal ones, namely they are invariant with respect to... 

mehr erfahren

11.01.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Homogeneous manifolds 2

Andreas Hermann

[3, 3.58-3.64]

mehr erfahren

09.01.2018, 11:00  –  University of Hamburg, Geomatikum, Bundesstraße 55
Seminar "Nonlinear Wave Equations"

Wave Maps

Philip Thonke, Klaus Kroencke, Oliver Lindblad

11:00Philip Thonke2+1 Large Data Global Existence: Introduction
13:30Klaus Kroencke2+1 Large Data Global Existence: Outline and Extension Procedure
15:00Oliver Lindblad2+1 Large Data Global Existence:... 
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08.01.2018, 16:15 – 17:45  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Ist mathematisches Wissen sicher? Wirklich? Die Erfassung epistemologischer Überzeugungen von Studierenden

Benjamin Rott (Universität zu Köln)

Was denken Studierende über mathematisches Wissen? Halten sie es für eher sicher oder eher unsicher? Können sie ihre Position (sicher vs. unsicher) argumentativ untermauern? Und wie entwickeln sich... 

mehr erfahren

08.01.2018, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Wente Inequality

Alexander Friedrich

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

04.01.2018, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Homogeneous manifolds

Andreas Hermann

[3, 3.58-3.64]

mehr erfahren

04.01.2018, 16:00  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Symmetry of the Hadamard coefficients for a formally self-adjoint, normally hyperbolic operator on a globally hyperbolic Lorentzian manifold

Max Lewandowski

We will start with the case of operators with analytic coefficients and show that the Hadamard series in some point converges in some open neighborhood of that point. In that neighborhood the symmetry... 

mehr erfahren

20.12.2017, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Learning and Imaging: A Trip through Modern Data Science

Carola Schönlieb (University of Cambridge), Gitta Kutyniok (TU Berlin)

The colloquium begins at 14:00  with a talk

Model-based learning in imaging

by Carola-Bibiane Schönlieb (DAMTP Cambridge)

Abstract:

One of the most successful approaches to solve inverse problems... 

mehr erfahren

18.12.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Weak Compactness and Regularity of Harmonic Maps with Values in the Sphere

Jan Metzger

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

15.12.2017, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Yang-Mills fields on manifolds of dimension greater than four

Chand Devchand (MPI Potsdam)

The Yang-Mills (YM) equations have yielded a fascinating supply of novel results in mathematics. As PDEs these equations are rather well understood in dimensions four and below. For higher dimensions... 

mehr erfahren

14.12.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Adjoint representation and bilinear operations

Andreas Hermann

[3, 3.44-3.57]

mehr erfahren

14.12.2017, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Minimal elastic energy surfaces

Claudia Grabs

Starting with a relaxed elastic shell, any deformation yields certrain stresses inside the material. In the static case, equilibrium configurations for a given deformation of the boundary are obtained... 

mehr erfahren

11.12.2017, 16:15 – 17:45  –  Universität Potsdam, Institut für Mathematik, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

ALICE:Bruchrechnen: Tablet PCs im Unterricht der Sekundarstufe

Frank Reinhold, STR (Technische Universität München, TUM School of Education)

Die Bruchrechnung gilt als einer der schwierigeren Teilbereiche der mathematischen Grundbildung. Bisherige Forschungsarbeiten gehen davon aus, dass ein handlungsorientiertes Arbeiten und folglich die... 

mehr erfahren

11.12.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Harmonic Maps with Values in Lie Groups 2

Sara Azzali

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

08.12.2017, 10:15-11:45  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Distributional Uncertainty in Uncertainty Quantification

Tim Sullivan (Zuse Institut Berlin und FU Berlin)

Many problems in forward and inverse uncertainty quantification assume a single probability distribution of interest, e.g. a distribution of random inputs or a prior measure for Bayesian inference.... 

mehr erfahren

08.12.2017, 10:30 Uhr
Arbeitsgruppenseminar Analysis

Rota's Classification Problem, Rewriting Systems and Groebner-Shirshov Bases

Li Guo (Rutgers University)

Throughout the history, mathematical objects are often
understood through studying operators defined on them. Well-known
examples include Galois theory where a field is studied by its
automorphisms (the... 

mehr erfahren

07.12.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Continuous homomorphisms and closed subgroups

Philipp Bartmann

[3, 3.38-3.43]

mehr erfahren

07.12.2017, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Boundary Value Problems for the Lorentzian Dirac Operator

Sebastian Hannes

On a globally hyperbolic spacetime the Lorentzian Dirac Operator under APS boundary conditions is Fredholm and its kernel consists of smooth spinors. We will discuss a certain class of boundary... 

mehr erfahren

04.12.2017, 16:15 – 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Natürliche Differenzierung – ein Konzept zum konstruktiven Umgang mit Heterogenität

Prof. Dr. Günter Krauthausen (Universität Hamburg)

Zunehmend heterogene Lerngruppen kennzeichnen den Mathematikunterricht – kein neues Phänomen, denn seit den 1970er Jahren liegen zahlreiche Empfehlungen zur Differenzierung vor. Warum wird gleichwohl... 

mehr erfahren

04.12.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Harmonic Maps with Values in Lie Groups 1

Florian Hanisch

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

01.12.2017, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

A class of nonlinear filters induced by local couplings

Alessio Spantini (Massachusetts Institute of Technology, USA)

We introduce a class of structure-exploiting nonlinear filters for high-dimensional state-space models with intractable transition kernels. The idea is to transform the forecast ensemble into samples... 

mehr erfahren

01.12.2017, 11.00  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Endpoint Strichartz Estimates and the Wave Maps equation

Oliver Lindblad

mehr erfahren

01.12.2017, 13:30  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Small Data Global Existence for the Wave Maps equation

Florian Hanisch

mehr erfahren

01.12.2017, 15.00  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Self similar blow-up

Klaus Kröncke

mehr erfahren

01.12.2017, 09:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Lorentzian noncommutative geometry

Christian Brouder (Sorbonne Université, Paris)

Alain Connes' noncommutative geometry (NCG) is a powerful generalization of Riemannian geometry. Connes and collaborators showed that a Riemannian version of the standard model of particle... 

mehr erfahren

01.12.2017, 11:00 Uhr  –  Haus 31, Raum 0.18
Arbeitsgruppenseminar Analysis

A Locality Principle of Renormalization via Algebraic Birkhoff Factorization

Li Guo (Rutgers University)

An interpretation of the locality principle in renormalization is that a locality property is preserved in the process of renormalization. We establish such a principle in the framework of the... 

mehr erfahren

01.12.2017, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

Wave Maps

Oliver Lindblad, Florian Hanisch, Klaus Kroencke

11:00Oliver LindbladEndpoint Strichartz Estimates
13:30Florian HanischSmall Data Global Existence
15:00Klaus KroenckeSelf Similar Blow Up
mehr erfahren

30.11.2017, 14:15
Seminar Geometrie

Lie groups and homogeneous spaces: Exponential map

Viktoria Rothe

[3, 3.29-3.37]

mehr erfahren

30.11.2017, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

The local version of the Lorentzian index theorem

Christian Bär

The Atiyah-Singer index theorem for Dirac operators D on compact Riemannian spin n-manifolds can be proved using the heat kernels of D*D and of DD*.  Namely, one easily sees that

<tex>\mathrm{ind}(D)... 

mehr erfahren

27.11.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Sphere-Valued Maps and the Bäcklund Transformation

Alexander Friedrich

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

24.11.2017, 10:15-11:15  –  Haus 28, Raum 0.104
SFB-Seminar

On the use of the particle filter for geomechanical parameter estimation when monitoring subsidence due to hydrocarbon extraction

Femke Vossepoel (Delft University of Technology, Netherlands)

Fluid extraction from a subsurface hydrocarbon reservoir results in compaction of the reservoir, in particular cases leading to subsidence and induced seismicity. Coupled flow-geomechanical models... 

mehr erfahren

24.11.2017, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The extended Sobolev scale for vector bundles

Tetiana Zinchenko (Chernihiv, Ukraine)

Elliptic theory on compact closed manifolds is usually developed in the scale of Sobolev spaces $H^s(\Gamma, V)$, where $V$ is a smooth vector bundle over $\Gamma$ and $s$ is a real number. Some parts... 

mehr erfahren

23.11.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Coverings and simply-connected Lie groups

Claudia Grabs

[3, 3.22-3.28]

mehr erfahren

17.11.2017, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Integration on loop space, zeta-Pfaffians and index theory

Florian Hanisch (Potsdam)

We will discuss an approach to integrate differential forms on loop space. Integrals of this type naturally appear within formal path integral proofs of the Atiyah-Singer index theorem and we will... 

mehr erfahren

16.11.2017, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

The Regularized Hadamard Expansion

Margarita Kraus (Mainz)

A local expansion of a distributional bisolution of the Klein Gordon equation is proposed. This expansion is given by sequences of functions, which satisfy certain transport equations. These equations... 

mehr erfahren

16.11.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Lie subgroups

Florian Hanisch

[3, 3.17-3.21]

mehr erfahren

15.11.2017, 14:30 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung

mehr erfahren

13.11.2017, 16:15 - 17:45  –  Universität Potsdam, Institut für Mathematik, Campus Golm, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

„Roboter und Co. Spielerischer Erwerb informatischer Grundkompetenzen in der Primarstufe“

Prof. Dr. Silke Ladel (Universität des Saarlandes)

Computer, Tablets und Smartphones sind in der heutigen Lebenswelt allgegenwärtig. Die meisten Kinder nutzen diese Geräte täglich, ohne weiter darüber nachzudenken. Die Kinder sollen jedoch nicht nur... 

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13.11.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Sobolev Spaces and the Variational Approach

Elke Rosenberger

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

10.11.2017, 10:15-11:45  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Comparing deep neural networks against humans: Object recognition with weak signals

Felix Wichmann

The visual recognition of objects by humans in everyday life is typically rapid and effortless. Until very recently, animate visual systems were the only ones capable of this remarkable computational... 

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09.11. bis 10.11.2017  –  Am Neuen Palais, Haus 8, Raum 1.45
Workshop

Kick-Off-Meeting "Geometry at Infinity"

Beginn: Donnerstag 09.11.2017 um 12:30
Ende: Freitag 10.11.2017 um 15:30
Ort: Campus Am Neuen Palais, Auditorium Maximum (Haus 8, Raum 1.45)

Programm

mehr erfahren

08.11.2017, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

Interactions between mathematics and physics: symmetries and randomness

Simone Warzel (TU München), Frank Rupert (LMU München)

Das Kolloquium beginnt um 14:00 Uhr mit einem Vortrag

 

von Rupert Frank (LMU, München):

 

"Symmetry and Reflection Positivity"

 

Abstract:

There are many examples in mathematics,... 

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06.11.2017, 16.00  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Conservation Laws for Harmonic Maps 2

Philip Thonke

This semester we will study the first chapters of the book "Harmonic Maps, Conservation Laws and Moving Frames" by Frédéric Hélein.

mehr erfahren

03.11.2017, 11.00  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Introduction to the Wave Map Equation

Philip Thonke

mehr erfahren

03.11.2017, 13.30  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Algebraic Structure and Coulomb Gauge

Alexander Friedrich

mehr erfahren

03.11.2017, 15.00  –  Haus 9, Raum 2.22
Seminar: Hyperbolic Differential Equations on Curved Spacetimes

Singularities and Equivariant Wave Maps

Jan Metzger

mehr erfahren

03.11.2017, 11:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

Wave Maps

Philip Thonke, Alexander Friedrich, Jan Metzger

11:00Philip ThonkeIntroduction to the Wave Map Equation
13:30Alexander FriedrichGauge Conditions
15:00Jan MetzgerEquivariant Wave Maps
mehr erfahren

02.11.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Homomorphisms

Max Lewandowski

[3, 3.13-3.16]

mehr erfahren

02.11.2017, 16:15  –  Haus 9, Raum 1.10
Forschungsseminar Differentialgeometrie

Supersymmetric Path Integrals (I)

Florian Hanisch

Integration over the space of superpaths, associated to a Riemannian manifold, plays an important role in the path integral approach to the Atiyah-Singer index theorem. This is indeed equivalent to... 

mehr erfahren

01.11.2017, 14:15  –  Haus 9, Raum 2.22
Doktorandentag

Doktorandentag / PhD day

  • 14:15-14:45 Alexander Friedrich: Generalized Willmore Surfaces –
 From Blood Cells to Quasi Local Energies
  • 14:45-15:15 Pause und Wahl der Doktorandenvertreter/innen
  • 15:15-15:45 Johanna Goral:... 
mehr erfahren

27.10.2017, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Accelero-summation and the analyticity problem of QFT

Pierre Clavier (Potsdam)

Most physical quantities of quantum field theory (QFT can only be computed via a perturbative approach, i.e. a formal series.

A natural question is how to assign an analytic function to this formal... 

mehr erfahren

26.10.2017, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Constructing temporal functions and isometric embeddings of Lorentzian manifolds

Olaf Müller (HU Berlin)

In the last years, several new methods for the construction of temporal functions with specified geometric properties on a given spacetime have been developed. In this talk, a selection of them is ... 

mehr erfahren

26.10.2017, 14:15  –  Haus 9, Raum 1.10
Seminar Geometrie

Lie groups and homogeneous spaces: Lie groups and their Lie algebras

Sebastian Hannes

[3, 3.1-3.12]

mehr erfahren

25.10. bis 27.10.2017  –  Campus Golm
Workshop

Mini-course in Discrete Mathematics: "Relatively free Doppelsemigroups"

A. V. Zhuchok

A. V. Zhuchok (Luhansk Taras Shevchenko National University, Starobilsk, Ukraine)

25.10.2017 14:15 – 15:45 in 2.09.1.10
26.10.2017 14:15 – 15:45 in 2.31.0.18
27.10.2017 14:15 – 15:45 in 2.09.0.14

Abst... 

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23.10.2017, 16:15 - 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Wie geht es, wenn die Realität auch beachtet werden soll? Offene, realitätsbezogene Problemvariation in mehreren Schulstufen

Prof. Dr. Gabriella Ambrus (Eötvös-Loránd-Universität Budapest)

Die Offenheit einer Aufgabe ist noch heute für viele Schüler und Schülerinnen ungewöhnlich und kann sogar Probleme verursachen. Zum Beispiel beim Lösen von realitätsnahen Aufgaben.

Inwieweit sind... 

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20.10.2017, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Infinite-dimensional Lie groups in renormalisation and regularity structures

Alexander Schmeding (TU Berlin)

In the theory of renormalisation of quantum field theories (Connes and Kreimer) and in Hairer's regularity structures for stochastic differential equations certain "renormalisation groups" appear.
Thes... 

mehr erfahren

19.10.2017, 16:15  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Dirac eigenvalues under codimension one collaps

Saskia Roos (Bonn)

After giving a characterization of a collaps of codimension one we study the behavior of Dirac eigenvalues in that situation. We show that there are converging eigenvalues if and only if there is an... 

mehr erfahren

13.10.2017, 10:15-11:45  –  Campus Golm, Haus 28, Raum 0.108
SFB-Kolloquium

Stochastic Models of Gene Expression

Philippe Robert

Protein production is a key process of prokaryotic and eukaryotic cells consuming more that 80% of their resources. The cytoplasm of the cell being a disorganized medium subject to thermal noise, the... 

mehr erfahren

04.10.2017, 10:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Direct and Inverse Problems in Machine Learning : Kernel Methods and Spectral Regularization

Nicole Mücke

mehr erfahren

25.09. bis 26.09.2017, 9:00 Uhr  –  Campus Am Neuen Palais, Haus 9, Raum 9.1.12
SFB-Seminar

SFB Kick-Off Workshop

mehr erfahren

19.09.2017, 10:00 Uhr  –  Haus 29, SR 0.25/0.26
Verteidigung der Dissertation / Defence of the PhD thesis

Cell physiology based pharmacodynamic modeling of antimicrobial drug combinations

Christoph Hethey

mehr erfahren

15.09.2017, 10:15 Uhr  –  Campus Golm, Haus 28, Raum 2.123
SFB-Seminar

Improving Data Assimilation By Surfing the Waves

Juan M. Restrepo

Department of Mathematics and
College of Earth Oceans and Atmospheric Sciences
Oregon State University

Abstract:
The use of models and data, via data assimilation, is one of the strategies pursued to... 

mehr erfahren

21.08.2017, 10:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
SFB-Seminar

Minimization-based sampling from the posterior distribution for inverse problems with Gaussian prior distributions

Dean S. Oliver

Abstract link

see also the list of the SFB seminar events

mehr erfahren

20.07.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Solutions to the linearized Einstein constraint equations

Oliver Lindblad Petersen

Any closed Riemannian manifold which has vanishing scalar curvature is a solution to the relativistic vacuum constraint equations. Examples include the flat torus and certain Berger spheres. If the... 

mehr erfahren

19.07.2017, 10:15 Uhr  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

The Navier-Stokes Equations for Elliptic Quasicomplexes

Azal Mera

mehr erfahren

18.07.2017, 10.15  –  Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Noise sensitivity of Lévy driven SDE’s : estimates and applications

Tania Kosenkova (Potsdam)

The topic of this talk is induced by the following question: whether the deviation between the solutions of two different Lévy driven SDE’s can be controlled in terms of the characteristics of the... 

mehr erfahren

18.07.2017, 11.00  –  Haus 9, Raum 0.14
Forschungsseminar Wahrscheinlichkeitstheorie

Wasserstein distances between discretely observed Lévy processes

Ester Mariucci ( HU Berlin)

We present some upper bounds for the Wasserstein distance of order p between the product measures associated with the increments of two independent Lévy processes with possibly infinite Lévy measures.... 

mehr erfahren

18.07.2017, 10:15  –  Haus 9, Raum 2.22
Verteidigung der Dissertation / Defence of the PhD thesis

Higher order rectifiability in Euclidean space

Mario Santilli

mehr erfahren

18.07.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Sari Ghanem

14:00Sari GhanemStability of Minkowski 3
mehr erfahren

14.07.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Universal properties of rooted trees and rooted forests

Pierre Clavier

I will present the results obtained by Lucas Delage (Potsdam). As already shown in a previous presentation, rooted trees have a universal property as pre-Lie algebras, while rooted forests have... 

mehr erfahren

14.07.2017, 10:15 Uhr  –  Campus Golm, Haus 28, Raum 0.108
SFB-Seminar

Adaptive convergence results for numerical efficient Bayesian methods

Jan van Waaij

Jan van Waaij , Faculteit der Natuurwetenschappen, Wiskunde en Informatica Korteweg-de Vries Instituut, University of Amsterdam, Netherlands

abstract link

This is collaborative work with: Moritz... 

mehr erfahren

13.07.2017, 12.00-12.30  –  Haus 09, Raum 1.10, Golm
Forschungsseminar Wahrscheinlichkeitstheorie

Masterarbeitverteidigung "Expected Tumor Cell Lifespan During Radiotherapy Treatment: A Heterogeneous Stochastic Model"

Alexandra Wolff

mehr erfahren

13.07.2017, 12.00-12.30  –  Haus 09, Raum 1.10, Golm
Verteidigung der Masterarbeit / Defence of the Master thesis

Expected Tumor Cell Lifespan During Radiotherapy Treatment: A Heterogeneous Stochastic Model

Alexandra Wolff

mehr erfahren

13.07.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Linear wave equations with initial data on compact Cauchy horizons

Oliver Lindblad Petersen

When studying wave equations in a region of a curved spacetime, one usually assumes that the region satisfies certain causality conditions. Expressed in mathematical terms, one assumes that the region... 

mehr erfahren

12.07.2017, 10:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Homotopy invariance of cohomology and signature of a Riemannian foliation. Part 2

Georges Habib

We prove that any smooth foliation that admits a Riemannian foliation structure has a well-defined basic signature, and this geometrically defined invariant is actually
a foliated homotopy invariant.... 

mehr erfahren

12.07.2017, 15:00 Uhr  –  Haus 9, Raum 2.22
Institutskolloquium

From classical to quantum gravity

Kristina Giesel (Universität Erlangen-Nürnberg), Benjamin Bahr (Universität Hamburg)

  • 15:00 Kristina Giesel (University of Erlangen)
  • 16:00 Coffee break
  • 16:30 Benjamin Bahr (University of Hamburg)

 Abstracts:

Spin networks and spin foam models  (Benjamin Bahr)
While spin networks... 

mehr erfahren

11.07.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Sari Ghanem

14:00Sari GhanemStability of Minkowski 2
mehr erfahren

07.07.2017, 9.00  –  Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Pesin’s formula for isotropic Brownian flows

Vitalii Senin (Berlin)

Pesin's formula is a relation between the entropy of a dynamical system and its positive Lyapunov exponents. This formula was first established by Pesin in the late 1970s for some deterministic... 

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07.07.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Homotopy invariance of cohomology and signature of a Riemannian foliation. Part 1/2

Georges Habib

We prove that any smooth foliation that admits a Riemannian foliation structure has a well-defined basic signature, and this geometrically defined invariant is actually a foliated homotopy... 

mehr erfahren

06.07.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

A General Definition of Conserved Quantities in General Relativity

Sajad Aghapour (IPM, Teheran)

In this talk I will review a paper by Zoupas and Wald which summarizes the proposal for a general definition of "conserved quantities" in General Relativity and other theories of gravity developed by... 

mehr erfahren

04.07.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Sari Ghanem

14:00Sari GhanemStability of Minkowski Space 1
mehr erfahren

03.07.2017, 16:15 - 17:45  –  Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Den diagnostischen Blick schärfen – Mathematische Diagnostikkompetenz ange- hender Lehrkräfte messen und fördern

Prof. Dr. Antje Ehlert und Luisa Wagner (Uni Potsdam)

Der Erwerb mathematischer Basiskompetenzen ist einer der wichtigsten Entwicklungsprozesse in der Grundschule. Um ihn erfolgreich meistern zu können, ist ein Unterricht notwendig, der die... 

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30.06.2017, 10.15-11.45  –  Golm, Haus 9, 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Ruin measures and occupation times for spectrally negative Lévy processe

Hélène Guérin (Rennes )

I will present some risk measures for insurance models, the classical ruin and different parisian
ruins, who are linked to occupation times of the surplus process. Some explicit results will be
given in... 

mehr erfahren

29.06.2017, 17:45  –  Free University Berlin, Arnimallee 6, SR 009
Seminar "Topics in Geometric Analysis"

Barbara Nelli

17:45 Barbara Nelli (L'Aquila) Minimal Surfaces in the Heisenberg Space

We discuss the behaviour of some minimal surfaces in the Heisenberg space. In particular, we deal with... 

mehr erfahren

28.06.2017, 15:00 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung 28.06.2017

mehr erfahren

27.06.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Jan Metzger

14:00Jan MetzgerCounterexamples to Existence of Solutions
mehr erfahren

26.06.2017, 16:15 - 17:45  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Die Fachsprache Mathematik als Stolperstein oder Baustein im Wissensbildungs- prozess? Grundlagen und Merkmale eines sprachsensiblen Mathematikunterrichts

Prof. Dr. Barbara Schmidt-Thieme (Universität Hildesheim)

Lehren und Lernen von Mathematik geht immer mit dem Gebrauch von Sprache einher: bei der Einführung oder Definition mathematischer Objekte, bei Diskussionen über verschiedene Lösungswege, bei der Do-... 

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23.06.2017, 10.15  –  Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

About some stochastic particle dynamics

Laure Pédèches (Toulouse/Potsdam)

In this talk, on the one hand, we will look into the asymptotic behaviour of stochastic version of
the Cucker-Smale model, while also presenting a propagation of chaos result. On the other hand,
we will... 

mehr erfahren

23.06.2017, 10:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Elliptic pseudo-differential operators in QFT on curved spacetimes

Michal Wrochna (Grenoble)

In Quantum Field Theory on curved spacetimes, the problem of constructing Wick powers of fields amounts to dealing with a priori ill-defined trace densities of certain Fourier Integral Operators.... 

mehr erfahren

22.06.2017, 16:15  –  Raum 0.14
Forschungsseminar Differentialgeometrie

Heat kernel estimates for general boundary problems

Alexander Strohmaier

The heat kernel in a domain with Dirichlet boundary conditions satisfies so-called “not feeling the boundary estimates”. These reflect the locality of the heat expansion and can for example be derived... 

mehr erfahren

22.06.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

Introduction to conformal Killing forms

Andreas Hermann

Conformal Killing p-forms are a generalization of conformal Killing vector fields on semi-Riemannian manifolds. In this talk we review some known properties of conformal Killing p-forms. We describe... 

mehr erfahren

20.06.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Philip Thonke

14:00Philip ThonkeTimelike Minimal Surfaces
mehr erfahren

19.06.2017, 16:15 - 17:45  –  Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Lernen mit digitalen Schulbüchern im Mathematikunterricht der Grundschule

Prof. Dr. Sebastian Rezat (Uni Paderborn)

Die Digitalisierung erhält zunehmend Eingang in die Schulen – auch in den Mathematikunterricht der Grundschule. Der Mehrwert der digitalen Medien wird oft angepriesen, jedoch gibt es bislang nur... 

mehr erfahren

16.06.2017, 10.00  –  TU Berlin, Raum MA 415 des Mathematikgebäudes
Forschungsseminar Wahrscheinlichkeitstheorie

Verteidigung der Doktorarbeit ''Well-posedness and stability of stochastic evolution equations arising from neuroscience''

Jennifer Krüger

mehr erfahren

16.06.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The universal property of the grafting operator

Lucas Delage (Potsdam)

It is well known that the grafting operator B_+, defined on the vector space of forest by gluing every tree of a forest to a common root, obeys the following universal property : for any commutative... 

mehr erfahren

15.06.2017, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Huy Nguyen and Thomas Mettler

16:15 Huy Nguyen (London)  Mean Curvature Flow of Codimension Two Surfaces

In this talk, I will describe joint work with Charles Baker. We will consider surfaces of co-dimension two in... 

mehr erfahren

14.06.2017, 15:30 Uhr  –  Albert Einstein Institute, Room 0.01
Seminar Geometry and Physics

Applications of PDE compatibility complexes in relativity

Igor Khavkine

I will discuss the Killing operator (K_{ab}[v] = \nabla_a v_b + \nabla_b v_a) on a (pseudo-)Riemannian manifold as an overdetermined PDE and its (formal) compatibility complex. It has been observed... 

mehr erfahren

13.06.2017, 15:00 - 17:00  –  University of Potsdam, Campus Golm, Building 29, Room 29.0.25
Verteidigung der Dissertation / Defence of the PhD thesis

Disputation Yuan Cheng

Yuan Cheng

Recursive State Estimation in Dynamical Systems

 

This thesis discusses various data assimilation methods, with a special focus on the applicability to spatio-temporal systems. With ensemble Kalman... 

mehr erfahren

12.06.2017, 16:15 - 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Was läuft im Mathematikunterricht und in der Lehrerbildung falsch? Wie könnte umgesteuert werden?

Prof. em. Dr. Dr. h.c. Erich Christian Wittmann

Den ersten Teil des Vortrags bilden operative Beweise mit Plättchen, die vom Kindergarten bis zur Univer- sität reichen. Diese Beweise verkörpern das, was dem heutigen Mathematikunterricht im Kern... 

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09.06.2017, 11 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The de Rham complex over Hölder spaces weighted at infinity and the Navier-Stokes equations

Alexander Shlapunov (Siberian Federal University)

mehr erfahren

08.06.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

Potentials and conservation laws

Lars Andersson

I will discuss how Hertz potentials can be used to construct conservation laws for massless fields including Maxwell and linearized gravity.

mehr erfahren

08.06.2017, 16:15  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Ein Indexsatz für homogene Räume

Christian Bär

Ich werde erklären, wie sich der Fredholm-Index eines äquivarianten elliptischen Operators über einem homogenen Raum darstellungstheoretisch berechnen lässt.

mehr erfahren

07.06.2017, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Ungewöhnliche Einblicke in die Mathematik

Ehrhard Behrends (FU Berlin) und Dirk Werner (FU Berlin)

  • 15:00 Dirk Werner (FU Berlin)
  • 16:00 Coffee break
  • 16:30 Ehrhard Behrends (FU Berlin)

Abstracts:

Wer soll das alles lesen? (Dirk Werner)

Klassifizieren, Indexieren und Referieren mathematischer... 

mehr erfahren

02.06.2017, 10.15-11.45  –  2.09.0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Well-Posedness and stability of Stochastic Evolution Equations arising from Neuroscience

Jennifer Krüger (Berlin)

We study the existence and uniqueness of mild solutions to the deterministic and the stochastic neural field equation
with Heaviside firing rate. Since standard well-posedness results do not apply in... 

mehr erfahren

01.06.2017, 16:15  –  Free University Berlin, Arnimallee 6, SR 009
Seminar "Topics in Geometric Analysis"

John Huerta and Leon Escobar

16:15 John Huerta (Lisbon) G2 and the rolling ball

Understanding the exceptional Lie groups as the symmetry groups of simpler objects is a long-standing program in mathematics. Here,... 

mehr erfahren

01.06.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

Electromagnetic duality in linearized gravity

Cedric Troessaert

I will review how, in the Hamiltonian formalism, one use a double potential formalism to obtain a manifestly duality invariant description of linearized gravity.

mehr erfahren

01.06.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Foundations on elliptic operators on compact manifolds

Max Lewandowski

After establishing some important basics about pseudo differential operators we will construct a parametrix for elliptic operators on compact manifolds, which allows several conclusions, e.g. elliptic... 

mehr erfahren

30.05.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Florian Hanisch

14:00Florian HanischSystems satisfying the null condition 3
mehr erfahren

26.05.2017, 11 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Secondary invariants for two-cocycle twists

Sara Azzali

We consider a class of Dirac-type operators, on the universal covering of a closed manifold, that are invariant under the projective action associated to a two-cocycle of the fundamental group.

These... 

mehr erfahren

23.05.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Florian Hanisch

14:00Florian HanischSystems satisfying the null condition 2
mehr erfahren

22.05.2017, 16:15 - 17:45  –  Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

HADES – mit geisteswissenschaftlichen Methoden Mathematik besser verstehen

Prof. Dr. Walther Paravicini (U Göttingen)

Wie kann man das, was zum Handwerkszeug eines Mathematikers/einer Mathematikerin gehört, systema- tisch erfassen und lern- sowie lehrbar machen? Davon handelt dieser Vortrag, wobei wir davon ausgehen,... 

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19.05.2017, 10.15-11.45  –  2.09.0.13
Forschungsseminar Wahrscheinlichkeitstheorie

On mutual behavior of solutions of an SDE with non-regular drift

Olga Aryasova (Kyiv)

We consider a stochastic differential equation with a Gaussian noise and a drift vector having jump discontinuities
along a hyperplane or surface. We study the large time behavior of the distance... 

mehr erfahren

19.05.2017, 11 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Locality and index theory

Sylvie Paycha

This talk (based on joint work with S. Azzali) discusses local linear forms on classical pseudo-differential operators on a closed manifold, and their relevance in index theory.
Local linear forms are... 

mehr erfahren

18.05.2017, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Joachim Lohkamp

16:15 Joachim Lohkamp (Münster)  Skin Structures - An Introduction

Spaces arising from variational problems oftentimes carry very complicated singularities. Even worse, the regular... 

mehr erfahren

18.05.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Einführung in die Spin-Geometrie: Analytische Grundlagen

Max Lewandowski

Dirac-Operator auf riemannschen Mannigfaltigkeiten, Elliptizität, wesentliche Selbstadjungiertheit, Diskretheit des Spektrums

mehr erfahren

17.05.2017, 14:00 Uhr  –  Campus Golm, Haus 29, Raum 0.25/0.26
Verteidigung der Dissertation / Defence of the PhD thesis

Integrating Nonlinear Mixed Effects and Physiologically–Based Modeling Approaches for the Analysis of Repeated Measurement Studies --- With Applications in Quantitative Pharmacology and Quantitative Psycholinguistics

Alexander Solms

mehr erfahren

16.05.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Jan Metzger

14:00Jan MetzgerSystems satisfying the null condition 1
mehr erfahren

15.05.2017, 16:15 - 17:45  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Analysisunterricht zwischen Allgemeinbildung, Zentralabitur und Studierfähigkeit

Prof. Dr. Andreas Büchter (Uni Duisburg-Essen)

Im Analysisunterricht der gymnasialen Oberstufe sollen die Schülerinnen und Schüler:

  • einerseits die Begriffsbildung und den Theorieaufbau in der Mathematik sowie das Anwenden von Mathematik erfahren... 
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13.05.2017  –  Campus Golm
Institutsveranstaltung

Potsdamer Tag der Wissenschaften 2017

Das Institut für Mathematik ist beim Potsdamer Tag der Wissenschaften am 13. Mai 2017 auf dem Campus Golm vertreten.

Der Lehrstuhl von Prof. Dr. Wilhelm Huisinga präsentiert "Eine gute Dosis... 

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12.05.2017, 10.00-11.45  –  Golm, Haus 9 Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Strong and weak rates of approximation for integral functionals of Markov processes

Iurii Ganychenko (Potsdam)

We provide weak and strong rates of approximation of integral functionals of Markov processes by Riemann sums.Assumptions on the processes are formulated only in terms of their transition probability... 

mehr erfahren

12.05.2017, 11 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Operators on a manifold with boundary and edge

Sara Khalil

We establish a calculus of boundary value problems (BVPs) on a manifold N with boundary and edge, based on Boutet de Monvel's theory of  BVPs in the case of a smooth boundary and on the edge calculus,... 

mehr erfahren

12.05.2017, 10.45-11.30  –  Haus 9, Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

Estimating occupation time functionals

Randolf Altmeyer

An occupation time functional is a Lebesgue integral of a function f(X_t) with X a stochastic process (X_t). Given
the observations at discrete times (X_{k T/n})_k, we study the approximation of the... 

mehr erfahren

11.05.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Einführung in die Spin-Geometrie: Geometrische Grundlagen

Andreas Hermann

Hauptfaserbündel, assoziierte Vektorbündel, Spinorbündel, Clifford-Multiplikation und Zusammenhang auf dem Spinor-Bündel

mehr erfahren

10.05.2017, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Biochemical networks; modeling randomness in and outside the cell

Heinz Köppl (Technische Universität Darmstadt), Verena Wolf (Universität des Saarlandes)

  • 15:00 Verena Wolf: Stochastic chemical kinetics: method of conditional moments
  • 16:00: Coffee break
  • 16:30 Heinz Köppl: Biochemical networks in random environments: modeling and inference

Abstracts:

Stoc... 

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09.05.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Jörg Enders

14:00Jörg EndersOn the Nonlinear Klein-Gordon Equation
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08.05.2017, 14:30 Uhr  –  Campus Golm, Haus 28, Raum 2.28.0.104
Verteidigung der Dissertation / Defence of the PhD thesis

Microphysical retrieval of non-spherical aerosol particle using regularized inversion of multi-wavelength lidar data

Stefanos Samaras

mehr erfahren

05.05.2017, 10.15 - 11.45  –  Haus 9 Raum 0.13
Forschungsseminar Wahrscheinlichkeitstheorie

The bridges of the Langevin dynamics

Giovanni Conforti (Lille)

 

The Langevin dynamics is a simple stochastic model for molecular dynamics. Its behavior is well understood and a very accurate description of its long time behavior can be obtained under the... 

mehr erfahren

05.05.2017, 11 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Locality and the renormalization of branched zeta values

Pierre Clavier

Localised structures are given by some structures together with an independence relation. They are meant to encode the notion of “locality” in Physics. Taking into account locality allows to define a... 

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04.05.2017, 16:15  –  Free University Berlin, Arnimallee 6, SR 009
Seminar "Topics in Geometric Analysis"

Pablo Mira and Bernhard Brehm

16:15 Pablo Mira (Cartagena) Proof of Alexandrov's uniqueness conjecture on prescribed curvature spheres in R^3

In 1956 A.D. Alexandrov conjectured that if an ovaloid in R^3... 

mehr erfahren

04.05.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Einführung in die Spin-Geometrie: Algebraische Grundlagen

Sebastian Hannes

Clifford-Algebren, Clifford-Multiplikation, Pin-Gruppe, Spin-Gruppe, Spinor-Darstellung, invariantes inneres Produkt

mehr erfahren

02.05.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Jens Fischer

14:00Jens FischerThe Null Condition
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26.04.2017, 14:00 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung 26.04.2017

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26.04.2017, 10:15-11:45  –  Haus 9, Raum 2.22
Forschungsseminar Differentialgeometrie

Mass-like invariants for asymptotically hyperbolic metrics

Mattias Dahl

Asymptotically Euclidean and asymptotically hyperbolic manifolds have mass invariants computed at infinity. These invariants have the interpretation as the total mass of the manifold as a slice of... 

mehr erfahren

26.04.2017, 18.15  –  am Weierstraß-Institut, Raum: ESH, Berlin
Forschungsseminar Wahrscheinlichkeitstheorie

On a selection problem for small noise perturbation of ODE in multidimensional case

Andrey Pilipenko (Kyiv)

mehr erfahren

26.04.2017, 10:30  –  Haus 9, Raum 2.10
Arbeitsgruppenseminar Analysis

A universal property for localised structures and application to branched zeta functions

Sylvie Paycha

Localised structures are given by some structures together with an independence relation. They are meant to encode the notion of “locality” in Physics. When rooted forests are decorated by a set which... 

mehr erfahren

25.04.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Oliver Lindblad

14:00Oliver LindbladDecay of the Wave Equations and Existence for Nonlinear Equations 2
mehr erfahren

21.04.2017, 10.15-11.45  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Gastvortrag "A functional limit theorem for excited random walks"

Prof. Dr. Andrey Pilipenko (Kyiv)

We consider the limit behavior of an excited random walk (ERW), i.e., a
random walk whose transition probabilities depend on the number of times the
walk has visited the current state. We prove that an... 

mehr erfahren

21.04.2017, 11:00 Uhr  –  !!! Haus 14, Raum 0.21
Arbeitsgruppenseminar Analysis

Locality and renormalisation by a finite part procedure

Sylvie Paycha

According to the principle of locality in physics, events taking place at different locations should behave independently of each other, a feature expected to be reflected in the measurements. In... 

mehr erfahren

20.04.2017, 16:15 Uhr  –  Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The Cauchy-Problem for fundamental solutions of formally self-adjoint wave operators on globally hyperbolic Lorentzian manifolds

Max Lewandowski

We start by discussing under which circumstances a fundamental solution can be restricted to a spacelike Cauchy hypersurface so that the corresponding Cauchy problem is well-posed which will demand... 

mehr erfahren

20.04.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

Symmetries and hidden symmetries of Maxwell theory

Lars Andersson

Maxwell's theory of electromagnetism is a relativistic field theory on Minkowski space, and is symmetric under the 10-dimensional Poincare group of isometries of Minkowski space. However, it admits... 

mehr erfahren

18.04.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On Quasilinear Wave Equations and Klainerman Estimates

Alexander Friedrich

14:00Alexander FriedrichDecay of the Wave Equations and Existence for Nonlinear Equations 1
mehr erfahren

23.03.2017, 16:00-17:30  –  Raum 1.10
Forschungsseminar Differentialgeometrie

Geometric singularities and a flow tangential to the Ricci flow

Lashi Bandara

In 2012, Gigli and Mantegazza introduced a new geometric flow via heat kernels. They demonstrated that this flow is tangential to the Ricci flow in a suitable weak sense for smooth, compact Riemannian... 

mehr erfahren

22.03.2017, 13:00  –  Golm, Haus 9, Raum 1.10
Verteidigung der Masterarbeit / Defence of the Master thesis

Identifikation und Selektion disziplinierter Schüler durch den Mathematikunterricht

Kay Karsten Mirbach

mehr erfahren

01.03.2017, 14:15  –  Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Gastvortrag "Asymptotics of exponential moments of a weighted local time of a Brownian motion with small variance"

Daryna Sobolieva (Kyiv)

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27.02.2017  –  Campus Griebnitzsee
Konferenz

51. GDM-Jahrestagung 2017

GDM2017

Die Gesellschaft für Didaktik der Mathematik (GDM) und das Institut für Mathematik der Universität Potsdam veranstalten die 51. Jahrestagung der GDM.

zur Webseite der Tagung

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20.02. bis 25.02.2017  –  Uni Potsdam Campus Golm, Haus 10, Raum 0.25-26
Workshop

Geometric and Singular Analysis 2017

 

For more informations: webpage of the conference 

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17.02.2017, 14:00 Uhr  –  Haus 9, Raum 2.22, Golm
Verteidigung der Dissertation / Defence of the PhD thesis

Operators on Singular Manifolds

Xiaojing Lyu

Interessenten sind herzlich eingeladen.

Prof. Dr. Sylvie Paycha

mehr erfahren

10.02.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

On the determinant of the Laplacian Delta_k on a non-compact surface

Giovanni De Gaetano (Humboldt Universität zu Berlin)

The determinant of the Laplacian Delta_k on k-differentials,
or on automorphic forms of weight k, on a compact Riemann surface played
an important role in the mathematical physics literature in the late... 

mehr erfahren

09.02.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Der Fall positiver Eulerzahl

Oliver Lindblad Petersen

Der Fall positiver Eulerzahl

[CK, S. 148-156]

mehr erfahren

09.02.2017, 16:15 Uhr  –  Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

The curl operator on odd-dimensional manifolds

Christian Bär

We study the spectral properties of curl, a linear differential operator of first order acting on differential forms of appropriate degree on an odd-dimensional closed oriented Riemannian manifold. In... 

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08.02.2017, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Hypersurfaces in relativistic space-times

Carla Cederbaum (Tübingen), Oliver Rinne (Golm)

  • 15:00 Carla Cederbaum 
  • 16:00 Kaffeepause
  • 16:30 Oliver Rinne 

 

 

Carla Cederbaum (Tübingen)

Mathematical General Relativity: hypersurfaces of constant time

 

After a brief introduction into General... 

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08.02.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

A Rough Path Perspective on Renormalization

Peter Friz (TU Berlin)

We revisit (higher-order) translation operators on rough paths, in both the geometric
and branched setting. As in Hairer's work on the renormalization of
singular SPDEs we propose a purely algebraic... 

mehr erfahren

07.02.2017, 10:00  –  Campus Golm, Haus 9, Raum K.11
Verteidigung der Masterarbeit / Defence of the Master thesis

Algorithmen im Mathematikunterricht – Eine geeignte Heuristik zum Problemlösen oder verständnislose Kalkülanwendung?

Anne-Sophie Neuber

mehr erfahren

07.02.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeWave Maps - Algebraic Structure, Singularities and Nonuniqueness 2
mehr erfahren

02.02.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Harnack-Ungleichung

Jonas Rungenhagen

Harnack-Ungleichung

[CK, S. 143-148]

mehr erfahren

02.02.2017, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Konforme Geodäten im Cartankalkül

Daniel Platt

Ein Cartan-Zusammenhang ist eine 1-Form, die dieselben Invarianzeigenschaften wie ein Hauptfaserbündel-Zusammenhang hat und zusätzlich einen absoluten Parallelismus (in eine geeignete Lie-Algebra) in... 

mehr erfahren

31.01.2017, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Introduction to Supergravity

Olof Ahlén

Supersymmetry has been a very active research area in both elementary particle physics as well as models for quantum gravity. In this talk, I will outline the motivation for analyzing supersymmetric... 

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31.01.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeWave Maps - Algebraic Structure, Singularities and Nonuniqueness 1
mehr erfahren

30.01.2017, 16:15  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Grundvorstellungen zur Analysis vermitteln – was und wie?

Prof. Dr. Reinhard Oldenburg (Universität Augsburg)

Mathematikunterricht, der nicht nur auf das Nachvollziehen von Verfahren zielt, sondern auf den Aufbau inhaltli- chen Verständnisses, tut gut daran, zu den zentralen Begriffen tragfähige... 

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30.01.2017, 16:00 Uhr  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Geometric asymptotics: Cross index and Maslov class

Sara Azzali

Guillemin-Sternberg, Chapter IV, §3

mehr erfahren

27.01.2017, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Functional calculus for bisectorial operators and applications to geometry

Lashi Bandara (University of Gothenburg, Sweden)

The bounded holomorphic functional calculus for bisectorial operators can be thought of as an implicit Fourier theory in settings where the transform cannot be defined. It has been particularly useful... 

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26.01.2017, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Jose Miguel Manzano and Ahmad Afuni

16:15 Jose Miguel Manzano (London)   Parabolic stable surfaces with constant mean curvature in homogeneous 3-manifolds

In this talk we will discuss some properties of Schrödinger... 

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26.01.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Abschätzungen für die Krümmung und ihre Ableitung

Sebastian Hannes

Abschätzungen für die Krümmung und ihre Ableitung

[CK, S. 137u.-143]

mehr erfahren

26.01.2017, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Spectral flow and the Riesz stability of the Atiyah-Singer Dirac operator under bounded perturbations of local boundary conditions

Lashi Bandara

We study the Atiyah-Singer Dirac operator on smooth Riemannian Spin manifolds with smooth compact boundary. Under lower bounds on injectivity radius and bounds on the Ricci curvature and its first... 

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25.01.2017, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Energy diffusion and evolution equations

Ralph Chill (Universität Dresden), Alexander Mielke (WIAS Berlin)

  • 15:00 Ralph Chill: Dissipative evolution equations: recent progress on their qualitative behaviour
  • 16:00 Coffee break
  • 16:30 Alexander Mielke: A geometric approach to reaction-diffusion systems  

 

Abstra... 

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24.01.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeWave Maps - Basics, Geometric & Analytic Structure 3
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23.01.2017, 16:00 Uhr  –  Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Geometric asymptotics: Cross index and Maslov class

Sara Azzali

Guillemin-Sternberg, Chapter IV, §3

 

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21.01.2017, 9.00-13.00  –  TU Berlin, MA 748
Forschungsseminar Wahrscheinlichkeitstheorie

Oberseminar "Stochastic Processes and their approximation" III

Das Programm

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20.01.2017, 9.15 bis 12.15 und 12.45 bis 14.45  –  Golm, Haus 9 Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Oberseminar "Stochastic Processes and their approximation" II

 Das Programm

How to get to Haus 9 in Golm

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20.01.2017, 11:00  –  Haus 9, Raum 0.14
Arbeitsgruppenseminar Analysis

Locality and multivariable renormalisation

Pierre Clavier

We define sets with independence relations which are a generalisation of locality in physics. An example of such relation is given on the set of multivariable functions. A coproduct respecting the... 

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19.01.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Flächenentropie

Alexander Friedrich

Flächenentropie

[CK, S. 133-137]

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19.01.2017, 10:30 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

A transport metric for non-local Dirichlet forms and gradient flows of the entropy

Melchior Wirth

mehr erfahren

19.01.2017, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Index of the Dirac Operator on Lorentzian Spacetime

Sebastian Hannes

We will prove Fredholm property of the Dirac operator on a globally hyperbolic spacetime under generalized APS boundary conditions and their deformations. Then we can derive relative index formulas... 

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17.01.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Oliver Lindblad

14:00Oliver LindbladSemilinear Wave Equations - Critical Growth
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16.01.2017, 16:15  –  Campus Golm, Haus 10, Raum 0.25
Oberseminar Didaktik

Konzeption Lehrerfortbildung Zahlverständnis

Heiko Etzold

Zur GDM-Tagung sowie während eines Symposiums zum digitalen Lernen in Chemnitz soll ein Lehrer-Workshop mit dem Titel „Zahlverständnis mit Tablets unterstützen“ durchgeführt werden. Schwerpunkte... 

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13.01.2017, 10:30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

A construction of hyperkähler metrics

Chandrashekar Devchand

I will start with a brief introduction to quaternionic Kähler and hyperkähler geometry and then outline the explicit construction of hyperkähler metrics described in a recent paper with Andrea Spiro,... 

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12.01.2017, 16:15  –  Free University Berlin, Arnimallee 7 (Hinterhaus), SR 140
Seminar "Topics in Geometric Analysis"

Camillo De Lellis and Ernst Kuwert

16:15 Camillo De Lellis (Zürich) Minimizing sequence of sets

Compactness and semicontinuity theorems for minimizing sequences in geometric measure theory are usually achieved... 

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12.01.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Vorbereitung und Strategie im Fall positiver Eulerzahl

Christian Bär

Vorbereitung und Strategie im Fall positiver Eulerzahl

[CK, S. 128-132]

mehr erfahren

12.01.2017, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

First variation of the mass of a closed Riemannian manifold

Andreas Hermann

Let (M,g) be a closed Riemannian manifold such that all eigenvalues of the conformal Laplace operator L_g are strictly positive and such that g is flat on an open neighborhood of a point p. The... 

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12.01.2017, 10:30 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

First order calculus for Dirichlet forms and some applications to PDE

Michael Hinz (Bielefeld)

In this talk we review the definitions of items of vector calculus based on Dirichlet forms and mention connections to graph Laplacians and to non-local and local operators on metric measure spaces.... 

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12.01.2017, 10:00  –  Golm, Haus 9, Raum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Verteidigung der Masterarbeit "Die alpha-skalierte Brownsche Brücke: Einige Eigenschaften"

Florian Hildebrandt

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11.01.2017, 13:30 Uhr  –  Haus 9, Raum 2.22
Institutsrat

Institutsratssitzung 11.01.2017

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10.01.2017, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeWave Maps - Basics, Geometric & Analytic Structure 2
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05.01.2017, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Ricci-Solitonen

Claudia Grabs

Ricci-Solitonen

[CK, S. 112, 116-119], [CLT]

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05.01.2017, 10:30 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Audible and inaudible curvature invariants

Dorothee Schüth (HU Berlin)

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15.12.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Konvergenz im Fall Eulerzahl = 0

Andreas Hermann

Konvergenz im Fall Eulerzahl = 0

[CK, S. 123u.-128]

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15.12.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

The geometry of semiclassical limits on regular Dirichlet spaces

Batu Güneysu

In this talk, I will first explain how one can reformulate the known semiclassical limit results for the heat trace of Schrödinger operators on Riemannian manifolds and infinite weighted graphs in a... 

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13.12.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Higher conserved currents

Igor Khavkine

A conserved current for a PDE in $n$-variables can be thought of as a field dependent $(n-1)$-form that is closed on solutions. A similar definition can also be made in other form degrees. A field... 

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13.12.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeWave Maps - Basics, Geometric & Analytic Structure 1
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12.12.2016, 16:15  –  Campus Golm, Haus 10, Raum 0.25
Oberseminar Didaktik

Mitbestimmen im Unterricht - subjektive Überzeugungen nach dem Praxissemester

Peter Klöpping

Subjektive Überzeugungen von Lehrkräften, sogenannte teacher beliefs  lassen sich innerhalb des Modells professioneller Handlungskompetenz verorten. Über ihre Ausbildung, Erlernbarkeit und Stabilität... 

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08.12.2016, 16:15  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Marc Mars and Carla Cederbaum

16:15 Marc Mars (Salamanca) Kerr-de Sitter spacetime and conformal infinity

In this talk I will present a characterization of Kerr-de Sitter among spacetimes satisfying the Einstein... 

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08.12.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Konvergenz im Fall negativer Eulerzahl

Oliver Lindblad Petersen

Konvergenz im Fall negativer Eulerzahl

[CK, S. 120-123]

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08.12.2016, 10:30 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Discrete Ricci curvature via geodesic convexity of the entropy

Jan Maas (IST Austria)

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07.12.2016, 10:45  –  Haus 9, Raum 0.13
Arbeitsgruppenseminar Analysis

Lévy's stochastic area revisited using a sticky shuffle Hopf algebra

Yue Wu (TU Berlin)

Lévy's area is simply the signed area enclosed by the planar
Brownian motion and its chord. It is intrinsically the difference of two
iterated integrals of second rank against its component... 

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07.12.2016, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Rods, spheres and balls from a Hamiltonian system perspective

Alberto Abbondandolo (Ruhr Universität Bochum), Nils Waterstraat (University of Kent)

  • 15:00 Uhr Alberto Abbondandolo "On short geodesics and shadows of balls"
  • 16:00 Uhr Teepause
  • 16:30 Uhr Nils Waterstraat  "The buckling of the Euler rod"

     

 

Alberto Abbondandolo (Ruhr Universität Bochum)

... 

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06.12.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Florian Hanisch

14:00Florian HanischSemilinear Wave Equation - Basics, Segal's and Jörgen's Theorems 2
mehr erfahren

05.12.2016, 16:15  –  Universität Potsdam, Campus Golm, Haus 10, Raum 0.25
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Analysis verständlich unterrichten – Herausforderung für Unterricht und Lehrerbildung

Prof. Dr. Rainer Danckwerts (Universität Siegen)

Die Analysis ist und bleibt der harte Kern der Oberstufenmathematik. Seit den Vergleichsstudien TIMSS und PISA ist ihre primär kalkülhafte Behandlung zunehmend in die Kritik geraten. Der Vortrag... 

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02.12.2016, 9.00-13.00  –  TU Berlin, MA 748
Forschungsseminar Wahrscheinlichkeitstheorie

Oberseminar "Stochastic Processes and their approximation" I

Jonathan Mandt, Generation of random variables. Inversion, Acceptance-Rejection, and Fast Fourier transform.

Konrad Noworyta, Asymptotic ... 

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01.12.2016, 10:15 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Courant's nodal domain theorem for regular Dirichlet forms

Michael Schwarz

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30.11.2016, 11:00  –  **Haus 6** Raum 1.01
Arbeitsgruppenseminar Analysis

Heat trace expansion on a manifold with conical singularities

Asilya Suleymanova (Humboldt-Universität zu Berlin)

In the paper "Can one hear the shape of a drum?" Mark Kac asked the following question. If an infinite sequence of eigenmodes of a domain is given can one determine geometry of the domain? What... 

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29.11.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Action principles and conserved currents, continued

Lars Andersson

I will introduce the notions of Noether current and Noether charge for a Lagrangian field theory.

References:
Lee and Wald, Local symmetries and constraints, JMP 1990
Iyer and Wald, Some properties of... 

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29.11.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Florian Hanisch

14:00Florian HanischSemilinear Wave Equation - Basics, Segal's and Jörgen's Theorems 1
mehr erfahren

28.11.2016, 16:15  –  Universität Potsdam, Campus Golm, Haus 10, Raum 0.25
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Algebraische Grundideen für die Grundschule – Implizites explizieren

Prof. Dr. Anna Susanne Steinweg

Etliche Forschungsergebnisse zu algebraischem Denken in der Grundschule liegen vor. Sie sind jedoch noch kaum in die Unterrichtspraxis vorgedrungen; dabei würde der Mathematikunterricht vielfältige... 

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24.11.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Krümmungspotential und Krümmungsschranken

Andreas Hermann

Krümmungspotential und Krümmungsschranken

[CK, S. 112 (ab (5.8))-115]


fortgesetzt am 1.12.2016

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24.11.2016, 10:30 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Rigidity properties of the hypercube via Bakry Emery curvature

Florentin Münch

We give rigidity results for discrete Bonnet-Myers diameter bound and Lichnerowicz eigenvalue estimate. Both inequalities are sharp if and only if the underlying graph is a hypercube.  The proofs use... 

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24.11.2016, 16:15  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Mattias Dahl and Yangqin Fang

16:15 Mattias Dahl (Stockholm) Constructions of outermost apparent horizons with non-trivial topology

Drawing from ideas in general relativity, the outermost apparent horizon of an... 

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23.11.2016, 10:00 Uhr  –  Haus 9, Raum 0.13
Arbeitsgruppenseminar Analysis

Bott-Chern cohomology, Galois coverings and d'd''-lemma

Francesco Bei (Humboldt Universität zu Berlin)

Bott-Chern cohomology groups provide a very important tool in the study of compact complex manifolds. For instance, as recently shown by Angella and Tomassini, Bott-Chern cohomology groups can be used... 

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22.11.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

A short introduction to the basics of the Noether theorem and its application

Michael Jung

I will start with an infinitesimal symmetry transformation as a diffeomorphism and derive the Noether-current. The setting is a compact domain in the flat space and just with one scalar field and one... 

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22.11.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Alexander Friedrich

14:00Alexander FriedrichWell Posedness 2
mehr erfahren

21.11.2016, 16:15  –  Campus Golm, Haus 28, Raum 0.108
Oberseminar Didaktik

Mathematik draußen machen (Work in Progress)

Clara Nehrkorn

In dem Vortrag wird der Begriff geklärt und abgegrenzt, was mit Draußen-Mathematik-Aufgaben gemeint wird. Auf Grundlage einer Literaturrecherche stelle ich meine Forschungsfragen vor und das geplante... 

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18.11.2016, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Hypoelliptic geometries

Shantanu Dave (WPI, Wien)

A geometry such as a Riemannian geometry, Lorenzian geometry or CR
geometry allows a local description of a manifold near every point and
hence can be used to construct differential operators which are... 

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17.11.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Krümmungsevolution

Viktoria Rothe

Krümmungsevolution

[CK, S. 109u.-111]

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17.11.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Zeta Functions and Mass of Conformal Differential Operators

Matthias Ludewig

I will explain the relation between the Green’s function of a Laplace type operator and its zeta function. In particular, we will see that the constant term in the asymptotic expansion (which is often... 

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16.11.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Feynman motives -part 2

Lucas Delage-Moreau (Potsdam)

The goal of this talk is to make clear the relation there exists between the period isomorphism which shows up in the theory of motives and the computation of some Feynman integrals from quantum field... 

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15.11.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Action principles and conserved currents

Lars Andersson

I will introduce, and give examples of, the notions of symplectic potential current, symplectic current, and Noether current for a Lagrangian field theory with local symmetries.
References:
Lee and... 

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15.11.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Alexander Friedrich

14:00Alexander FriedrichWell Posedness 1
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14.11.2016, 16:15  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Zur Entwicklung des Funktionsbegriffs: von der Keilschrift zum Computer

Prof. Dr. Horst Hischer (Universität des Saarlandes)

Der mit „Funktion“ bezeichnete Begriff nimmt in der Mathematik die zentrale Stellung eines nicht mehr weg zu denkenden Grundbegriffs ein. Wie und wann kam es zur Entwicklung und Entstehung dieses... 

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10.11.2016, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Emanuele Spadaro and José Espinar

16:15 Emanuele Spadaro (Leipzig)   Optimal regularity of three dimensional mass minimizing cones

In this talk I will present the following regularity results in minimal surface... 

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10.11.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Konforme Änderung der Metrik

Max Lewandowski

Konforme Änderung der Metrik

[CK, S. 107-109]

mehr erfahren

09.11.2016, 15:00  –  Haus 9, Raum 2.22
Institutskolloquium

Markov chains: a new approach to their long-time behaviour

M. Scheutzow (TU Berlin), A. Kulik (Uni Kiev/TU Berlin)

  • 15:00 Uhr M. Scheutzow,  Coupling, transportation plans and Markov chains   
  • 16:00 Uhr Teepause
  • 16:30 Uhr A. Kulik,  Generalized couplings and  Markov chains

 Abstracts:

M. Scheutzow (TU Berlin), Coupli... 

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09.11.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Feynman motives

Lucas Delage-Moreau (Potsdam)

The goal of this talk is to make clear the relation there exists between the period isomorphism which shows up in the theory of motives and the computation of some Feynman integrals from quantum field... 

mehr erfahren

08.11.2016, 10:15 Uhr  –  Haus 9, Konferenzraum 2.22
Forschungsseminar Wahrscheinlichkeitstheorie

Defence of the PhD Thesis "On the Exact Simulation of (Skew) Brownian Diffusions with Discontinuous Drift"

Sara Mazzonetto

This thesis is focused on the study and the exact simulation of two classes of real-valued Brownian diffusions: multi-skew Brownian motions with constant drift and Brownian diffusions whose drift... 

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07.11.2016, 16:15  –  Universität Potsdam, Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Spielerische Mathematik (oder: Wie viel Mathematik in Spielen steckt)

Dipl.-Math. Frank Rehm (Leipzig)

„(nicht nur, aber besonders) Mathematiker lieben es zu spielen ...  Innehalten und nur eine Weile mit mathemati- schen Puzzles herumspielen ...  Wer die Grundfähigkeiten erworben hat, sollte dann... 

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04.11.2016, 10:00 (geänderte Uhrzeit)  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rough paths on manifolds 4

Youness Boutaib

We explore two ways of defining rough paths which are naturally well-suited to manifolds without having to add too much structure on them. The first definition looks at rough paths as functionals on... 

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03.11.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Maximumprinzip

Sebastian Hannes

Maximumprinzip

[CK S. 93-96]

mehr erfahren

03.11.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

On the construction of the Green operators and of the ground state for a massive scalar field theory in AdS

Claudio Dappiaggi

We consider a real, massive scalar field on the Poincaré domain of the (d+1)-dimensional AdS spacetime. Since the background is not globally hyperbolic, first we determine all admissible boundary... 

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03.11.2016, 10:00 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Exactness of Dynamical Systems and Convergence of Semigroups

Moritz Gerlach

This talk aims at completing the picture how exactness of dynamical systems is related to the asymptotic behavior of the Perron-Frobenius operator. In doing so, we give a mixing-like description of... 

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02.11.2016, 15:15 Uhr  –  Raum 2.22 Haus 9
Institutsrat

Institutsratssitzung 2.11.2016

Uhrzeit geändert!

mehr erfahren

01.11.2016, 16:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometry and Physics

Lagrangian and Hamiltonian field theory

Florian Hanisch

We will briefly review some basic ideas of the Lagrangian and the Hamiltonian approach to classical field theory, including some examples. We will keep the talk at an elementary level (sometimes with... 

mehr erfahren

01.11.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Oliver Lindblad

14:00Oliver LindbladLinear Wave Equation - Strichartz Estimates
mehr erfahren

27.10.2016, 14:15 Uhr  –  Haus 9, Raum 0.14
Seminar Geometrie

Ricci-Fluss auf Flächen: Einführung

Christian Bär

Einführung und Vergabe der Vorträge

[B], [CK, S. 105]

 

mehr erfahren

27.10.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

The Cauchy problem for the linearised Einstein equation

Oliver Lindblad Petersen

In this talk we discuss the well-posedness of the Cauchy problem for the linearised Einstein vacuum equation on arbitrary globally hyperbolic vacuum spacetimes. The solution space of the linearised... 

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27.10.2016, 11:00 Uhr  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Diskrete Spektraltheorie

Nichtkommutative Quasikristalle

Felix Pogorzelski (Technion Haifa)

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26.10.2016, 15:00 Uhr  –  Universität Potsdam, Campus Golm, Haus 10, Raum 0.26
Institutskolloquium

Two Berlin mathematicians: Kurt Heegner and Karl Weierstraß

Norbert Schappacher (Straßbourg); Reinhard Bölling (Potsdam)

15:00 Uhr  Norbert Schappacher (Straßbourg)

 

"The Berlin bridge from 19th century mathematics to today´s Arithmetic Geometry"

 

The talk is about the Berlin mathematical outsider Kurt Heegner (1893... 

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25.10.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Jan Metzger

14:00Jan MetzgerLinear Wave Equation - Pointwise Estimates
mehr erfahren

21.10.2016, 11:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rough paths on manifolds 3

Youness Boutaib

   The general aim of this course is to present ways of translating

   notions from classical analysis (understood to be built for and

   adapted to the Euclidean setting) to manifolds without adding... 

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20.10.2016, 16:15  –  Free University Berlin, Arnimallee 6, Room 025/026
Seminar "Topics in Geometric Analysis"

Mathew Langford and Miles Simon

16:15 Mathew Langford (Berlin) Type-II singularities of two-convex (mean) curvature flows

We will show that any translator arising as a blow-up limit of a two-convex mean curvature... 

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19.10.2016, 14:00 - 17:00  –  Haus 18 - Universitätsbibliothek Golm
Ausstellung

Ausstellungseroeffnung "Women of mathematics throughout Europe. A gallery of portraits"

Sie sind eingeladen zu einer Zusammenkunft von Frauen in der Mathematik, aus Vergangenheit und Gegenwart, mit musikalischen Intermezzi von einem Streichquartett, das Stücke von Komponistinnen... 

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19.10.2016, 10:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Differentialgeometrie

An analogue of the Coleman-Mandula theorem for QFT in curved spacetimes

Chris Fewster

The Coleman--Mandula (CM) theorem states that the Poincaré and internal symmetries of a Minkowski spacetime quantum field theory cannot combine nontrivially in an extended symmetry group. In this talk... 

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18.10.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Duistermaat-Heckmann-formula in finite dimensions

Florian Hanisch

The first session of the seminar will consist of 2 parts:

1) Discussion of the program for the semester.

2) Talk by F. Hanisch: Supersymmetry and the Duistermaat-Heckmann-formula in finite... 

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18.10.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeFunction Spaces 3
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13.10.2016, 14:00  –  Haus 28, Raum 0.108
Oberseminar Didaktik

Problem solving and teacher training: An experience in Brazilian public schools

Dr. Edna Zuffi (Universidade de São Paulo, Brasilien)

We will explore two cases of the use of problem solving as a teaching methodology in Brazilian public schools. Some aspects of the  traditional culture for the teaching and learning in our schools wil... 

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11.10.2016, 10:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rough paths on manifolds 2

Youness Boutaib

The general aim of this course is to present ways of translating

   notions from classical analysis (understood to be built for and

   adapted to the Euclidean setting) to manifolds without adding too

...  mehr erfahren

06.10.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeFunction Spaces 2
mehr erfahren

04.10.2016, 10:00 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Rough paths on manifolds 1 - Minicourse

Youness Boutaib

 The general aim of this course is to present ways of translating

   notions from classical analysis (understood to be built for and

   adapted to the Euclidean setting) to manifolds without adding... 

mehr erfahren

04.10.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeFunction Spaces 1
mehr erfahren

29.09.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeConservation Laws 2
mehr erfahren

27.09.2016, 14:00  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Nonlinear Wave Equations"

On 'Geometric Wave Equations' by Shatah and Struwe

Philip Thonke

14:00Philip ThonkeIntroduction and Conservation Laws 1
mehr erfahren

30.08.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Operators on Singular Manifolds

Xiaojing Lyu

We study the interplay between analysis on manifolds with  singularities and complex analysis and develop new structures of  operators based on the Mellin transform and tools for iterating the... 

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19.07.2016, 12:30  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Essential selfadjointness and the l^2 Liouville property

Radoslaw Wojciechowski (CUNY)

mehr erfahren

18.07.2016, 16:15  –  Campus Golm, Haus 28, Raum 0.108
Oberseminar Didaktik

Winkelmessung (Arbeitstitel)

Christian Dohrmann

mehr erfahren

15.07.2016, 9.00  –  Campus Golm, Haus 9, Raum 2.22
Workshop

Mathematics under construction

Karin Baur (Graz), Magdalena Georgescu (Potsdam), Irina Kmit (Lviv/Berlin), Margarida Mendes Lopes (Lisbon), Maryana Viazovska (Berlin)

Workshop "Mathematics under construction",

Five contributions by women

www.math.uni-potsdam.de/professuren/analysis/MuC2016

mehr erfahren

14.07.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Boundary value problems for Dirac operators

Sebastian Hannes

The talk deals with boundary value problems for dirac type operators on a complete Riemannian manifold with compact boundary. After a short introduction to Dirac operators on Riemanian manifolds,... 

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13.07.2016, 14:30 Uhr  –  Universität Potsdam, Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

"Artificial intelligence, inductive reasoning and decision making"

Alexandra Carpentier, Yann Ollivier

 

 Achtung: geänderte Uhrzeiten !

 

 14:30 Uhr  Yann Ollivier (Paris-Saclay)

Artificial intelligence and inductive reasoning: from information theory to neural networks

 In order to one day build an... 

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11.07.2016, 16.15 Uhr  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematikunterricht in stark heterogenen Klassen - Ein Praxisprojekt zur Schul- und Unterrichtsentwicklung

Dr. Andrea Hoffkamp (Humboldt-Universität zu Berlin)

In meinem Vortrag stelle ich ein Langzeitprojekt zur Schul- und Unterrichtsentwicklung an einer Gemeinschaftsschule in Berlin-Kreuzberg vor. Der Fachunterricht der Schule findet in stark heterogenen... 

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08.07.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Mean curvature and cohomology

Ken Richardson

We discuss the uses of mean curvature in studies of hypersurfaces, foliations, and other structures on closed manifolds. In the particular case of foliations, we explain how it generates an important... 

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07.07.2016, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Julien Cortier and Enrico Valdinoci

16:15 Julien Cortier (Grenoble)   Mass-like invariants for asymptotically hyperbolic manifolds

We focus on Riemannian manifolds with one end asymptotic to the hyperbolic space... 

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06.07.2016, 14:00  –  Golm, Haus 9, Raum 2.22
Doktorandentag

Doktorandentag – PhD Day 2016

Am diesjährigen Doktorandentag finden drei Vorträge statt sowie die Wahl der Doktorandenvertreter.

Weitere Informationen hier.

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05.07.2016, 12:30  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Ricci curvature and eigenvalue estimate for the magnetic Laplacian on manifolds

Shiping Liu (Durham)

I will discuss a Buser type and a Lichnerowicz type eigenvalue estimates for the magnetic Laplacian on a closed Riemannian manifold. Those are motivated by our previous ... 

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05.07.2016, 16:30 Uhr  –  Raum 2.09.0.12
Forschungsseminar Numerik/Angewandte Mathematik/Statistik

Postprocessing of precipitation forecasts

Prof. Dr. Hans R. Künsch (ETH Zürich)

Joint work with Fabio Sigrist and Werner Stahel

The goal of postprocessing deterministic numerical
weather forecasts is to produce probabilistic forecasts
that are calibrated and sharp. In case of... 

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04.07.2016, 16:15  –  Campus Golm, Haus 28, Raum 0.108
Oberseminar Didaktik

Professionswissen (Arbeitstitel)

Johanna Goral

mehr erfahren

01.07.2016, 11.00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The degree sequence of a random graph

Anita Liebenau

The random graph G(n,p) is obtained from a set of n isolated vertices between which edges are inserted with probability p=p(n) each, all choices being independent.
The degrees of the vertices of G form... 

mehr erfahren

30.06.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Dirac operators on foliations

Ken Richardson

Given a foliation on a closed Riemannian manifold, the transversal Dirac operator is a Dirac operator that differentiates only in the directions normal to the foliation and is thereby transversally... 

mehr erfahren

30.06.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem

Matthias Ludewig, Florian Hanisch

The seminar will have two parts,

Matthias Ludewig: Finite dimensional approximation of path integrals (continuation).

Florian Hanisch: Supersymmetry and the Duistermaat-Heckman formula.


Witten's... 

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29.06.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Forschungsseminar Differentialgeometrie

Gamma-structures on symmetric spaces

Bernhard Hanke

Gamma-structures are weak forms of multiplications on closed oriented manifolds. As shown by Hopf the rational cohomology algebras of manifolds admitting Gamma-structures are free over odd degree... 

mehr erfahren

27.06.2016, 16:00 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Gromov-Hausdorff distance

Florian Hanisch

[Shioya 3.2]

mehr erfahren

23.06.2016, 16:15  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Klaus Kröncke and Mario Santilli

16:15 Klaus Kröncke (Hamburg) Stable and unstable Einstein warped products

In this talk, we systematically investigate the stability properties of certain warped product Einstein... 

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23.06.2016, 10:30 Uhr  –  Campus Golm, Haus 5, Raum 1.04
Forschungsseminar Diskrete Spektraltheorie

On the spectrum of operator families on discrete groups over minimal dynamical systems

Christian Seifert (Hamburg Harburg)

We consider families of bounded linear operators on \ell_p-spaces of discrete groups, parametrized by a dynamical system. By using limit operator techniques, we show that all the operators from that... 

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23.06.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Discretisation of path integrals

Matthias Ludewig

We will describe different ways of discretising path integrals and compare different metrics on the (discrete) path space. Moreover, we will discuss different boundary conditions for path (fixed... 

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20.06.2016, 16.15 Uhr  –  Freie Universität, Takustr. 9 (Informatikgebäude), 14195 Berlin, großer Hörsaal
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematische Genese im ersten Studienjahr – Überzeugungen von Lehramtsstudierenden zur Mathematik

Benedikt Weygandt (Freie Universität Berlin)

Im Rahmen der hochschuldidaktischen Neukonzeption des Studiengangs gymnasiales Lehramt in Frankfurt/M. wurde erhoben, welche Beliefs die Studienanfängerinnen und -anfänger mitbringen, welche... 

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20.06.2016, 16:00 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Oberseminar Analysis, Geometrie, Physik

Hausdorff distance

Florian Hanisch

[Shioya, 3.1]

mehr erfahren

17.06.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Essential norms of Volterra and Cesaro operators on certain spaces of continuous functions

Georges Habib

 We consider spaces, called Müntz spaces, of continuous functions on the unit intervall spanned by certain power functions. 

We study the properties of the Volterra and Cesàro operators on the L^1-Mü... 

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16.06.2016, 14:15 Uhr  –  Campus Golm, Haus 14, Raum 0.38
Forschungsseminar Diskrete Spektraltheorie

Averaging principles: From a microscopic to a macroscopic point of view

Markus Kunze (Konstanz)

We consider diffusion problems in a domain which is further subdivided by semi-permeable membranes. Such problems frequently occur in applications in biology, for example when studying the... 

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15.06.2016, 11:00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Branched rough paths as a regularity structure

Rosa Preiß

Recalling the definition of branched rough paths, we demonstrate how it equivalently translates into the language of Martin Hairer's theory of regularity structures. Based on this example, we briefly... 

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13.06.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Spectrum of the Laplacian

Matthias Ludewig

[Shioya 2.6]
Eigenvalue estimates in terms of separation distance

mehr erfahren

13.06.2016, 16.15 Uhr  –  Universität Potsdam, Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematik und gesunder Menschenverstand

Prof. Dr. Peter Bender (Universität Paderborn)

Die Mathematik, wie sie in der Gesellschaft gebraucht wird und in der Schule gelernt werden sollte, ist durchweg eng mit dem gesunden Menschenverstand verbunden. Mit eingekleideten Aufgaben hat dieser... 

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09.06.2016, 16:15  –  Free University Berlin, Arnimallee 3, Room 119
Seminar "Topics in Geometric Analysis"

Ulrich Menne and Elena Mäder-Baumdicker

16:15 Ulrich Menne (Potsdam) Weakly differentiable functions and Sobolev functions on varifolds

In geometric analysis both Sobolev functions on smooth Riemannian manifolds and... 

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09.06.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The scalar wave equation with(out) topological charge on Schwarzschild and Reissner-Nordström black hole spacetimes

Ariane Beier

The aim of this talk is to present the results of the analysis of the separated solutions of the scalar wave equation with and without topological charge on Schwarzschild and Reissner-Nordström black... 

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09.06.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem

Florian Hanisch

This talk will focus on supergeodesics.

Witten's heuristic proof of the index theorem using supergeometry is well known but still not fully mathematically understood. We present the approaches to the... 

mehr erfahren

08.06.2016, 14:00  –  Haus 9, Raum 2.22
Institutskolloquium

An invitation to the world of strings; where mathematics meets physics

Johannes Brödel, Valentina Forini

-- 14:00 Uhr Johannes Brödel (HU Berlin)

"String theory: a perfect laboratory for iterated integrals and multiple zeta values"

-- 15:00 Uhr coffee break

-- 15:30 Uhr Valentina Forini (HU Berlin) 

"Fun... 

mehr erfahren

07.06.2016, 12:15  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Seminar "Mengentheoretische Topologie": Der Satz von Tychonoff

Martin Schuhmacher

mehr erfahren

06.06.2016, 16.15 Uhr  –  Universität Potsdam, Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Verkörpertes Zahlenwissen

Prof. Dr. Martin Fischer (Universität Potsdam)

In den Kognitionswissenschaften galt lange das Kopfrechnen als Paradebeispiel für die Vorstellung, dass menschliches Denken abstrakte mentale Manipulation von Symbolen ist. Seit einiger Zeit zeigt... 

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02.06.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem: Finite dimensional approximation

Lars Andersson

This talk will focus on finite dimensional approximations of path integrals.

Witten's heuristic proof of the index theorem using supergeometry is well known but still not fully mathematically... 

mehr erfahren

01.06.2016, 10.30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Introduction to rough paths. 3/3

Ilya Chevyrev, TU

An introduction to rough paths

Abstract: The theory of rough paths has been developed over the past two decades in order to give a pathwise approach to classically ill-posed controlled differential... 

mehr erfahren

31.05.2016, 12:30  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Complex line bundles over simplicial complexes

Felix Knöppel (TU Berlin)

mehr erfahren

30.05.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Manifolds with positive Ricci curvature

Phillip Thonke

[Shioya 2.5]
Bounds for observable diameter, more examples of Levy families

mehr erfahren

30.05.2016, 16.15 Uhr  –  Humboldt-Universität, Unter den Linden 6, 10099 Berlin, Raum 2014 A
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Zugänge zum Grundlegenden

Prof. Dr. Hans-Dieter Sill (Universität Rostock)

Bei jedem Übergang von einer Stufe des Bildungssystems zur nächsten gibt es heute, aber eigentlich schon immer, massive Klagen über Defizite im mathematischen Wissen und Können der Absolventen der... 

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27.05.2016, 10:30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Multiple zeta values, and (motivic) Galois theory

Claire Glanois (MPI, Bonn)

Multiple zeta values (MZV), and Euler sums are particularly interesting examples of periods (in the sens of Kontsevich-Zagier), appearing notably at the crossroad of number theory, algebraic geometry... 

mehr erfahren

27.05.2016, 14:00 Uhr  –  Auditorium Maximum
Institutsveranstaltung

Euler-Vorlesung in Sanssouci

Prof. Yuri Manin (MPIM Bonn)

Euler-Vorlesung von Prof. Yuri Manin (MPIM Bonn)
"Time between real and imaginary: Big Bang and modular curves"

Historischer Vortrag von Prof. Tilman Sauer (U Mainz)
"»Ich bewundere... 

mehr erfahren

26.05.2016, 16:15  –  University of Potsdam, Campus Golm, Building 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Martin Reiris and Laurent Hauswirth

16:15 Martin Reiris A classification theorem for static solutions of the vacuum Einstein equations.

I will discuss a classification theorem for metrically complete solutions of the... 

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26.05.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

On the positive mass conjecture for closed Riemannian manifolds

Andreas Hermann

Let (M,g) be a closed Riemannian manifold such that all eigenvalues of the conformal Laplace operator L_g of g are strictly positive and such that g is flat on an open neighborhood of a point p. The... 

mehr erfahren

25.05.2016, 11.00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Mathematics, a tool to grasp reality

Christian Mercat, Université de Lyon

 

There is no need to wait for Partial Differential Equations to introduce students to modeling. Every object in mathematics has been introduced to solve a problem and many elementary mathematics can... 

mehr erfahren

23.05.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Separation distance

Sara Azzali

[Shioya 2.4 plus Thm 2.31 without proof and Lemma 2.32 with proof]
Relation between separation distance and observable diameter, Levy-Gromov isoperimetric inequality

mehr erfahren

23.05.2016, 16.15 Uhr  –  Universität Potsdam, Campus Golm, Haus 28, Raum 0.108
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Structural transformations in ratios and proportions in theoretical music contexts: A historical/educational approach

Prof. Dr. Oscar João Abdounur (Universidade de São Paulo)

This presentation covers questions of how relationships between mathematics and theoretical music throughout Western history shaped modern comprehension of critical notions such as “ratio” and... 

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19.05.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Semilinear wave equations and the Yamabe problem on Lorentzian manifolds

Viktoria Rothe

In this talk we will consider the Cauchy problem for semilinear wave equations on globally hyperbolic Lorentzian manifolds. We will examine under which conditions we obtain time-global solutions for... 

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19.05.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem

Florian Hanisch, Matthias Ludewig

This is a continuation of the seminar on April 21 and 28.
Witten's heuristic proof of the index theorem using supergeometry is well known but still not fully mathematically understood. We present the... 

mehr erfahren

18.05.2016, 14:00 Uhr  –  Universität Potsdam, Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Ergodic theory and dynamical systems

Tatjana Eisner (Leipzig), Tobias Jäger (Jena)

  • 14:00 Tatjana Eisner (Leipzig) "Ergodic theorems"
  • 15:00 Coffee break
  • 15:30 Tobias Jäger (Jena) "Model sets and Toeplitz flows"

Abstracts:

Tatjana Eisner (Leipzig) "Ergodic theorems"
Originally motivated... 

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18.05.2016, 10.30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Introduction to rough paths. 2/3

Ilya Chevyrev, TU

An introduction to rough paths

Abstract: The theory of rough paths has been developed over the past two decades in order to give a pathwise approach to classically ill-posed controlled differential... 

mehr erfahren

12.05.2016, 16:15  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Thomas Schmidt and Marcus Khuri

16:15 Thomas Schmidt (Hamburg) Measure data and obstacle problems for the total variation and the area functional

The talk is concerned with minimization problems for the total... 

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12.05.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Isotropic hyperelastic shells – Geometry, Physics, Examples

Claudia Grabs

We consider two-dimensional shells made of isotropic and hyperelastic material. First, the basic equations of elasticity are recalled, with special emphasis on the constitutive laws. Subsequently we... 

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11.05.2016, 10.30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Introduction to rough paths. 1/3

Ilya Chevyrev, TU

An introduction to rough paths

Abstract: The theory of rough paths has been developed over the past two decades in order to give a pathwise approach to classically ill-posed controlled differential... 

mehr erfahren

10.05.2016, 12:30  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Heat kernel estimates on measure spaces and the relative compactness of perturbations by potentials

Batu Güneysu (HU Berlin)

mehr erfahren

09.05.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

mm-spaces and Levy families

Elke Rosenberger

[Shioya 2.2-2.3]
Lipschitz order, observable diameter

mehr erfahren

04.05.2016, 14:00 Uhr  –  Raum 2.22 Haus 9
Institutsrat

Institutsratssitzung 4.5.2016

mehr erfahren

03.05.2016, 12:30  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Agmon-Abschätzungen für Differenzen-Operatoren

Elke Rosenberger (Potsdam)

mehr erfahren

02.05.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Levy's isoperimetric inequality

Tania Kosenkova

[Shioya 2.1]
Maxwell-Boltzmann distribution law, normal law a la Levy

mehr erfahren

29.04.2016, 11.00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Novikov additivity of the signature as a gluing index theorem

Juan Camillo Orduz (HU)

Given a 4k-dimensional oriented closed manifold X, its signature sig(X) in Z is a very important topological invariant which can be computed in terms of some combinations of Pontryagin classes. We can... 

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28.04.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

The Cauchy problem of the linearised Einstein equations

Oliver Lindblad Petersen

In this talk, we consider the Cauchy problem of the linearised Einstein equation on smooth globally hyperbolic spacetimes, satisfying the non-linear Einstein equation. Given smooth or distributional... 

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28.04.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem

Matthias Ludewig, Florian Hanisch

This is a continuation of the seminar on April 21.
Witten's heuristic proof of the index theorem using supergeometry is well known but still not fully mathematically understood. We present the... 

mehr erfahren

27.04.2016, 14.00  –  Universität Potsdam, Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Die Macht der Mathematik

Michael Korey, Charlotte Wahl

Institutskolloquium 

  • 14:00 Michael Korey (Dresden)     'Was ich mit meinem newerfundenen instrument zeigen unnd darthun kan'. Fürstliche Lust, mathematische Macht und der Einsatz von historischen... 
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26.04.2016, 12:30 Uhr  –  Campus Golm, Haus 9, Raum 0.13
Forschungsseminar Diskrete Spektraltheorie

Continuous variation of the spectrum: A characterization and a tool

Siegfried Beckus (University Jena)

mehr erfahren

25.04.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Transport plans and convergence in measure

Tania Kosenkova

[Shioya Def 1.20-Lemma 1.27]
(Sub-)transport plan, Ky-Fan metric

mehr erfahren

25.04.2016, 16:15  –  Campus Golm, Haus 28, Raum 0.108
Oberseminar Didaktik

Digitales Lernen Grundschule

Heiko Etzold

Im Projekt „Digitales Lernen Grundschule“ werden an der Universität Potsdam gemeinsam mit der Rosa-Luxemburg-Schule Potsdam Konzepte zum Einsatz digitaler Medien im Unterricht entwickelt und erprobt.... 

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22.04.2016, 11.00  –  Raum 2.22, Haus 9
Arbeitsgruppenseminar Analysis

Almost Frobenius duality and quantum cohomology

John Alexander Cruz Morales (Max-Planck-Institut, Bonn)

Frobenius manifolds,  introduced by Dubrovin, are flat Riemannian manifolds with a certain compatible multiplicative structure on the tangent space. They occur naturally in symplectic topology, more... 

mehr erfahren

21.04.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Generalised Hyperbolicity for Singular Spacetimes

Yafet Sanchez Sanchez

A desirable property of any spacetime is that the evolution of any physical field is locally well-defined. For smooth spacetimes this is guaranteed by standard local well-posedness results. Moreover,... 

mehr erfahren

21.04.2016, 14:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Seminar Geometry and Physics

Supersymmetry and the Atiyah-Singer Index Theorem

Matthias Ludewig, Florian Hanisch

Witten's heuristic proof of the index theorem using supergeometry is well known but still not fully mathematically understood. We present the approaches to the subject by Witten, Atiyah and Lott (and... 

mehr erfahren

18.04.2016, 16:00 Uhr  –  Raum 2.09.0.14
Oberseminar Analysis, Geometrie, Physik

Convergence of measures

Moritz Gerlach

[Shioya, chapter 1.2 up to Thm 1.19 and additional references]
weak and vague convergence, Prohorov distance

mehr erfahren

15.04.2016, 11.00  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Elliptic multiple zeta values and a special derivation algebra

Johannes Brödel (Humboldt Universität zu Berlin)

While usual multiple zeta values carry the transcendentality in many results of calculations in quantum field theory as well as tree-level string theory, elliptic multiple zeta values take this role... 

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14.04.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 0.14
Forschungsseminar Differentialgeometrie

Construction of solutions of wave equations on global hyperbolic Lorentzian manifolds via Hadamard expansion

Max Lewandowski

I will start again with solutions of d'Alembert's equation on n-dimensional Minkowski space fulfilling Wightman's Axioms as a prototype with regard to general wave equations on global hyperbolic ... 

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07.03. bis 11.03.2016  –  Campus Golm, Gebäude 10, 14476 Potsdam, Germany
Workshop

International Workshop: "Geometric and Singular Analysis"

 

Poster

Tentative list of participants

Schedule

Abstracts

 

 

Featured topics are:

- Sub-Riemannian geometries and spectral analysis

- Singular analysis and index theory

- PDOs and... 

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19.02.2016, 11 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

Spectral asymptotics estimates for tensor products of pseudodifferential operators

Sandro Coriasco (Universita' degli Studi di Torino)

I will illustrate results concerning the asymptotic behavior of the counting function of tensor products of operators, in the cases where the factors are either pseudodifferential operators on closed... 

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08.02.2016, 16:15  –  HU Berlin
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Stoffdidaktik konkret: lineare Approximation als ein Zugang zur Differentialrechnung am Ende der Sekundarstufe I

André Henning (Humboldt-Universität zu Berlin)

Ausgangspunkt des Vortrags ist die stoffdidaktische Ausarbeitung zweier Unterrichtsversuche zur Einführung der Ableitung einer Funktion an einer Stelle aus der Perspektive der linearen Approximation,... 

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05.02.2016, 11 - 12.30  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The Invariant Subspace Problem: general operator theory vs. concrete operator theory

Isabelle Chalendar (Lyon)

The Invariant Subspace Problem for (separable) Hilbert spaces is
a long-standing open question that traces back to John Von Neumann's works
in the 1950s asking, in particular, if every bounded linear... 

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04.02.2016, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

Integral Ricci curvature bounds and the Kato class on Riemannian manifolds

Christian Rose (TU Chemnitz)

mehr erfahren

04.02.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Symmetriebrechung und der Higgsmechanismus II

Christoph Stephan

Nach einer kurzen Wiederholung der geometrischen Grundlagen des Higgs-Mechanismus diskutiere ich die Eigenschaften der Massenmatrix und die möglichen physikalischen Freiheitsgrade.

Die Anzahl der... 

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03.02.2016, 14:00 Uhr  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

The mathematical heritage of Alexander Grothendieck

Winfried Scharlau (Universität Münster), Leila Schneps (Université Paris VII)

  • 14:00 Winfried Scharlau (Universität Münster): Alexander Grothendieck - a stranger in our world
  • 15:00 Coffee break
  • 15:30 Leila Schneps (Université Paris VII): Alexander Grothendieck: mathematician,... 
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28.01.2016, 16:15 Uhr  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Ananda Lahiri and Daniele Valtorta

16:15 Uhr Ananda Lahiri (Golm) Local regularity for weak mean curvature flow

In this talk I want to present a new version of Brakke's local regularity theorem. We consider a weak... 

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28.01.2016, 15:00 Uhr  –  Campus Golm, Haus 9, Raum 0.12
Forschungsseminar Differentialgeometrie

Suborbifolds

Martin Weilandt

Inspired by work of Borzellino and Brunsden, we generalize the notion of a submanifold identifying a natural and sufficiently general condition which guarantees that a subset of an (effective)... 

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28.01. bis 29.01.2016
Workshop

Workshop on Spectral Geometry

Das Institut für Graphentheorie veranstaltet zusammen mit der Arbeitsgruppe für Analysis der Universität Jena einen Workshop zum Thema "spektrale Geometrie". Weitere Informationen finden Sie unter

ht... 

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25.01.2016, 16:15  –  Uni Potsdam
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Curriculare Schulmathematik oder wissenschaftliche Mathematik oder etwas dazwischen? Welche mathematischen Kompetenzen sollten Lehrkräfte der Sekundarstufe erwerben?

Prof. Dr. Aiso Heinze (IPN – Kiel)

In den letzten 15 Jahren ist das professionelle Wissen von Lehrkräften in den Fokus der Bildungsforschung gerückt. Viele Studien orientieren sich dabei an einem einfachen Strukturmodell von... 

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22.01.2016, 10.15 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The convolution algebra of a foliation and some applications

Georges Skandalis (Université Paris Diderot)

Let M be a smooth compact manifold and F a foliation of M. We wish to study leafwise elliptic operators: these are differential operators which differentiate only in the leaf direction - and are... 

mehr erfahren

21.01.2016, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

Asymptotic behaviour of the Hodge-Laplacian spectrum on graph-like manifolds

Michela Egidi (TU Chemnitz)

In this talk (joint work with O. Post) we consider a family of compact, oriented and connected n-dimensional manifolds constructed according to the ... 

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21.01.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Präsentation und Kooperation mit Touchscreens

Christian Becker, Florian Hanisch, Christoph Stephan

Wir stellen die neuen Touchscreens des Instituts vor und erklären, wie man sie für Präsentationen und Kooperationen verwenden kann. Für Kooperationen bietet sich dabei Adobe Connect an, welches allen... 

mehr erfahren

20.01.2016, 14:00  –  Campus Golm, Haus 9, Raum 2.22
Institutskolloquium

Countable groups: an operator algebra point of view

Georges Skandalis, Sara Azzali

14:00 Georges Skandalis (Paris): "Traces and determinants on non commutative algebras and countable groups"
15:30 Sara Azzali (Potsdam): "Countable groups, covering spaces and spectral invariants"

 

"... 

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18.01.2016, 10.15  –  Raum E-N 053, der Elektronischen Institute, 10587 Berlin, Einsteinufer 19
Forschungsseminar Wahrscheinlichkeitstheorie

Travelling waves in stochastik neural fields

Eva Lang

Doktorarbeitverteidigung/ Defence of the Titel

mehr erfahren

18.01.2016, 16:15  –  II.28.0.108
Oberseminar Didaktik

Geometrie für alle

Martin von Gagern

mehr erfahren

15.01.2016, 11-12 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

On Newton's levitation and time reversal invariance

Victor Palamodov (University of Tel Aviv)

mehr erfahren

14.01.2016, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: Differentialformen, Tensorfelder und semiriemannsche Metriken

Matthias Ludewig

[GB, 13-26]

mehr erfahren

14.01.2016, 16:15 Uhr  –  University of Potsdam, CAMPUS GOLM, Haus 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Xavier Tolsa and Panu Kalevi Lahti

16:15 Uhr Xavier Tolsa (Barcelona) Quantitative estimates for the Riesz transform and rectifiabilty for general Radon measures

A remarkable theorem of Léger asserts that if $\mu$... 

mehr erfahren

14.01.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Symmetriebrechung und der Higgsmechanismus

Christoph Stephan

Eine Grundlage der mathematischen Modellierung des Standardmodells der Elementarteilchenphysik bilden Hauptfaserbündel und zu ihnen assoziierte Vektorbündel. Um die experimentell beobachteten... 

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14.01.2016, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

The spectrum of the graph p-Laplacian operator

Francesco Tudisco (Saarland University)

This introductory talk will focus on the eigenvalues and eigenfunctions of the graph p-Laplacian. We shall discuss two definitions of the eigenpairs that come as a natural generalization of the linear... 

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13.01.2016, 11 - 12.30 Uhr  –  Haus 9, Raum 2.22
Arbeitsgruppenseminar Analysis

The first mixed problem for generalised Lamé system

Azal Mera (Uni Potsdam)

We find an adequate interpretation of the  Lamé operator within the framework of elliptic complexes and study the first mixed problem for the generalised Lame' system. 

mehr erfahren

11.01.2016, 16:15  –  Uni Potsdam
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Digitale Medien – wann, wo, wie und warum - ein Medienkonzept für das Lernen von Mathematik für die Sekundarstufen

Prof. Dr. Bärbel Barzel (Universität Duisburg-Essen)

Digitale Medien werden in vielfältiger Weise für den Unterricht in Mathematik angeboten – als fertige Lernum- gebungen für einzelne Situationen im Unterricht oder als Programme und Werkzeuge wie... 

mehr erfahren

07.01.2016, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: Mannigfaltigkeiten, Karten, Funktionen und Vektorfelder

Oliver Lindblad Petersen

[GB, 1-13]

mehr erfahren

07.01.2016, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Visualisierung von Lösungen der Wärme- und Wellengleichung mittels SAGE

Christian Bär

Mit Hilfe der Computeralgebra-Software SAGE berechnen und visualisieren wir Lösungen der Wärmeleitungsgleichung und der Wellengleichung auf flachen 2-dimensionalen Tori. Nach einer kurzen... 

mehr erfahren

04.01.2016, 16:15  –  II.28.0.108
Oberseminar Didaktik

Erfassung metakognitiver Fähigkeiten im Mathematikunterricht

Pia Söder

Schwerpunkt der in diesem Vortrag präsentierten Masterarbeit stellte die Entwicklung eines diagnostischen Rahmens zur Erfassung metakognitiver Fähigkeiten von SchülerInnen im Mathematikunterricht dar.... 

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17.12.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: 3D-Grafik

Claudia Grabs

[F, 165-171]

mehr erfahren

16.12.2015, 14:00  –  2.09.2.22
Institutskolloquium

From geometry to computer graphics

Ulrich Pinkall (Berlin), Max Wardetzky (Göttingen)

  • 14:00 Ulrich Pinkall (Berlin): Schrödinger Smoke
  • 15:00 Coffee break
  • 15:30 Max Wardetzky (Göttingen): Variational convergence of minimal surfaces


Abstracts:

Ulrich Pinkall (Berlin): Schrödinger Smoke
In... 

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14.12.2015, 16:15  –  FU Berlin
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Inklusiver Unterricht und die Frage nach dem Kern der Mathematik

Dr. Natascha Korff (Universität Paderborn)

Mit- und voneinander lernen im inklusiven Mathematikunterricht bringt unter anderem Herausforderungen im Einsatz von Materialien und Veranschaulichungen mit sich. Ein Austausch über mathematische... 

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10.12.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: 2D-Grafik

Christian Becker

[F, 141-154]

mehr erfahren

10.12.2015, 16:15 Uhr  –  Free University Berlin, Arnimallee 7 (Hinterhaus), Raum 140
Seminar "Topics in Geometric Analysis"

Paul Laurain and James McCoy

16:15 Uhr Paul Laurain (Paris) Quantization phenomena for conformally invariant problems

This talk is devoted to a series of papers we have published with T. Rivière. First, we have been... 

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10.12.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

A new approach to physical solutions of scalar wave equations on globally hyperbolic Lorentzian manifolds

Max Lewandowski

After Radzikowski's celebrated equivalence theorem in the 1990's microlocal analysis and especially the wave front set of solutions of wave equations on globally hyperbolic Lorentzian manifolds... 

mehr erfahren

10.12.2015, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

Eventual Positivity of Operator Semigroups

Jochen Glück (Universität Ulm)

Let T = (T(t)) be a C_0-semigroup on some function space or, more generally, on a Banach lattice E. The semigroup T is called positive if T(t)f \ge 0 for each 0 \le f \in E and for each t \geg 0.... 

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07.12.2015, 16:15  –  II.28.0.108
Oberseminar Didaktik

Funktionales Denken in Mathematisierungsprozessen. Zum Einfluss von Simulationen im MATHEMATIK-Labor.

Sabine Baum

Im MATHEMATIK-Labor werden naturwissenschaftliche und technische Phänomene ‚funktional‘ durchdrungen. Im Vortrag soll ein Beschreibungsmodell vorgestellt werden, dass die Aspekte des funktionalen... 

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04.12.2015, 10:15-11:45  –  Golm, Haus 9, Raum 1.10
Gastvortrag

On a Brownian motion with a hard membrane

Andrey Pilipenko (Kyiv)

Local perturbations of a Brownian motion are considered. As a limit we

obtain a non-Markov process that behaves like a reflected Brownian

motion on the positive half line until its local time at... 

mehr erfahren

04.12.2015, 10:15-11:45  –  Golm, Haus 9, Raum 1.10
Forschungsseminar Wahrscheinlichkeitstheorie

On a Brownian motion with a hard membrane

Andrey Pilipenko (Kyiv)

Local perturbations of a Brownian motion are considered. As a limit we

obtain a non-Markov process that behaves like a reflected Brownian

motion on the positive half line until its local time at... 

mehr erfahren

03.12.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: Lineare Algebra II

Christoph Stephan

[F, 113-132]

mehr erfahren

03.12.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

The Hamiltonian formulation of general relativity and the space of initial data

Oliver Lindblad Petersen

We recall the Hamiltonian formulation of Einstein's vacuum equation and explain the exact meaning of the lapse function and the shift vector. In this form, Einstein's equation can be seen as a flow on... 

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03.12.2015, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

On the Liouville property of harmonic functions

Jun Masamune (Tohoku University)

When every harmonic function belonging to a space $E$ of functions is identically constant, we say that the $E$-Liouville property holds true. There are different types of Liouville property according... 

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02.12.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Forschungsseminar Wahrscheinlichkeitstheorie

On a Selection Problem for Small Noise Perturbation in Multidimensional Case

Andrey Pilipenko (Kyiv)

The problem on identification of a limit of an ordinary

differential equation with discontinuous drift that perturbed by a

zero-noise is considered in multidimensional case.

This problem is a... 

mehr erfahren

02.12.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Gastvortrag

On a Selection Problem for Small Noise Perturbation in Multidimensional Case

Andrey Pilipenko (Kyiv)

The problem on identification of a limit of an ordinary

differential equation with discontinuous drift that perturbed by a

zero-noise is considered in multidimensional case.

This problem is a... 

mehr erfahren

02.12.2015, 14:00  –  Raum 2.22 Haus 9
Institutsrat

Institutsratssitzung 2.12.2015

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30.11.2015, 16:15  –  HU Berlin
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Ein kalkülfreier anschaulicher Zugang zu Grundvorstellungen der Analysis

Hans-Jürgen Elschenbroich (Düsseldorf)

Der Analysisunterricht ist in der Schule oft dadurch geprägt, dass (zu) früh mit dem Kalkül gearbeitet wird, dann Kalkül vor Verständnis geht und oft nur noch unverstanden gerechnet wird, ohne eine... 

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26.11.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Path Integrals, Zeta-Determinants and the Gelfand-Yaglom Theorem

Matthias Ludewig

It is "well-known" in quantum field theories that the values of certain path integrals are given by associated zeta-determinants "up to a multiplicative constant". What is usually meant is that one... 

mehr erfahren

26.11.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: Lineare Algebra I

Florian Hanisch

[F, 113-132]

mehr erfahren

26.11.2015, 16:15 Uhr  –  Albert Einstein Institute, Room 0.01
Seminar "Topics in Geometric Analysis"

Nicola Fusco and Paul Bryan

16:15 Uhr Nicola Fusco (Naples) Stability and minimality for a nonlocal variational problem.

I will discuss the local minimality of certain configurations for a nonlocal... 

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26.11.2015, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

News about entropy

Felix Pogorzelski (Technion Haifa)

mehr erfahren

25.11.2015, 14:00  –  2.09.2.22
Institutskolloquium

From symmetric to quasisymmetric functions - combinatorics and topology

Christine Bessenrodt (Hannover), Birgit Richter (Hamburg)

  • 14:00 Christine Bessenrodt (Hannover): From symmetric to quasisymmetric functions - combinatorial refinements
  • 15:00 Coffee break
  • 15:30 Birgit Richter (Hamburg): From symmetric to quasisymmetric... 
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23.11.2015, 16:15  –  II.28.0.108
Oberseminar Didaktik

DeciPlace

Daniela Behrens, Matthias Börrnert, Anna Rohde

Vorgestellt werden die Untersuchungen einer Dissertation an der Universität Bremen sowie zweier Masterarbeiten an der Universität Potsdam zum Stellenwertverständnis bei Dezimalbrüchen.

mehr erfahren

19.11.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Intrinsische Metriken auf Graphen

Matthias Keller

mehr erfahren

19.11.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Programmierung - Sageskripte II

Ariane Beier

[F, 80-111]

mehr erfahren

19.11.2015, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

Energy Forms

Marcel Schmidt (University Jena)

mehr erfahren

13.11.2015, 10:15-11:45  –  Golm, Haus 9, Raum 1.10
Forschungsseminar Wahrscheinlichkeitstheorie

Minicourse: "Use of Counterexamples in Probability for Research: part II"

Jordan Stoyanov (Newcastle/Ljubljana)

We are going to have an intensive discussion on known objects: random variables and stochastic processes. The goal is to look closely at basic properties and results. Any result is proved under... 

mehr erfahren

12.11.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

Spectral functions of Dirac operators

Alexander Strohmaier

I will review some known general expansions of microlocal spectral counting functions of Dirac and Laplace operators. In special cases these relate directly to heat kernel coefficients. I will then... 

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12.11.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Programmierung - Sageskripte I

Max Lewandowski

[F, 80-111]

mehr erfahren

12.11.2015, 16:15 Uhr  –  University of Potsdam, CAMPUS GOLM, Haus 9, Room 2.22
Seminar "Topics in Geometric Analysis"

Alessandro Carlotto and Luca Spolaor

16:15 Uhr Alessandro Carlotto (Zürich) The finiteness problem for minimal surfaces of bounded index in a 3-manifold

Given a closed, Riemannian 3-manifold (N,g) without symmetries... 

mehr erfahren

11.11.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Forschungsseminar Wahrscheinlichkeitstheorie

Minicourse: "Use of Counterexamples in Probability for Research: part I"

Jordan Stoyanov (Newcastle/Ljubljana)

We are going to have an intensive discussion on known objects: random variables and stochastic processes. The goal is to look closely at basic properties and results. Any result is proved under... 

mehr erfahren

11.11.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Gastvortrag

Minicourse: "Use of Counterexamples in Probability for Research: part I"

Jordan Stoyanov (Newcastle/Ljubljana)

We are going to have an intensive discussion on known objects: random variables and stochastic processes. The goal is to look closely at basic properties and results. Any result is proved under... 

mehr erfahren

11.11.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Gastvortrag

Minicourse: "Use of Counterexamples in Probability for Research: part I"

Jordan Stoyanov (Newcastle/Ljubljana)

We are going to have an intensive discussion on known objects: random variables and stochastic processes. The goal is to look closely at basic properties and results. Any result is proved under... 

mehr erfahren

11.11.2015, 8:15-9:45  –  Golm, Haus 9, Raum 1.10
Forschungsseminar Wahrscheinlichkeitstheorie

Minicourse: "Use of Counterexamples in Probability for Research: part I"

Jordan Stoyanov (Newcastle/Ljubljana)

We are going to have an intensive discussion on known objects: random variables and stochastic processes. The goal is to look closely at basic properties and results. Any result is proved under... 

mehr erfahren

11.11.2015, 18:00-19:00  –  TU Berlin Raum MA 0.41
Forschungsseminar Wahrscheinlichkeitstheorie

Berliner Kolloquium Wahrscheinlichkeitstheorie: "Probability and other branches of mathematics"

Jordan Stoyanov (Newcastle/Ljubljana)

mehr erfahren

11.11.2015, 16:15 - 17:45  –  TU Berlin room MA748 (RTG Lounge)
Gastvortrag

The \Phi^4 model: Renormalisation, particle approximations and global analysis"

Hendrik Weber (Warwick)

The \Phi^4 model is a classical model in statistical mechanics. It arises naturally when trying to

construct a version of the Ising model with continuous spins (rather than +1 0r -1 valued spins)... 

mehr erfahren

09.11.2015, 16:15  –  Uni Potsdam
Berlin-Brandenburgisches Seminar Mathematik und ihre Didaktik

Mathematik auf der Straße

Prof. Dr. Matthias Ludwig (Goethe-Universität Frankfurt am Main)

Mit dem Projekt MathCityMap wird versucht in der alltäglichen Umgebung, auf öffentlichen Plätzen, an Gebäu- den, auf der „Straße“ Mathematik zu entdecken und diese in Aufgaben zu packen die dann vor... 

mehr erfahren

05.11.2015, 12:15 Uhr  –  Haus 9, Raum 0.12
Seminar Geometrie

Einführung in Sage: Ausdrücke und Funktionen, Objekte

Andreas Hermann, Florian Hanisch

[F, 63-73], [F, 73-77]

mehr erfahren

05.11.2015, 16:15 Uhr  –  Campus Golm, Haus 9, Raum 1.11
Forschungsseminar Differentialgeometrie

The scalar wave equation in Schwarzschild coordinates

Ariane Beier

mehr erfahren

05.11.2015, 12:30 Uhr  –  Campus Golm, Haus 5, Raum 1.12
Forschungsseminar Diskrete Spektraltheorie

Dirichlet Forms on Canonically Compactifiable Graphs

Michael Schwarz (Potsdam)

We consider weighted graphs with an infinite set $X$ of vertices such that every function of finite energy is bounded. For each of these graphs there is a compact set $K$ containing $X$ as a dense... 

mehr erfahren

02.11.2015, 16:15  –  II.05.1.06
Oberseminar Didaktik

Entdeckendes Lernen - Kritik eines Unterrichtskonzepts

David Kollosche

Die theoretischen Annahmen und praktischen Umsetzungen des prominenten Unterrichtskonzepts 'Entdeckendes Lernen' werden kritisch hinterfragt.