Veranstaltungen

Mitmachen. Informieren. Erleben.

An dieser Stelle finden Sie einen Überblick über Veranstaltungen, Vortragsreihen, Workshops, Fachseminare, kulturelle Begegnungen und vielem mehr. Das Institut für Mathematik lädt alle Studierenden, Lehrenden und Interessierte herzlich zur Teilnahme ein.

05.06.2023, 10:15  –  Campus Golm, Haus 9, Raum 1.10
Forschungsseminar Statistik

Parameter Estimation from Noisy Observations of a Stochastic Heat Equation

Gregor Pasemann (HU)

We consider the problem of estimating the diffusivity of a stochastic heat equation (or more generally, the parametrized drift of an abstract linear stochastic parabolic evolution equation) from... 

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06.06.2023, 15 Uhr  –  Zoom
Arbeitsgruppenseminar Analysis

Phenomena in High Dimensions

Pierre Youssef (New York University, Abu Dhabi)

Abstract:

What do high dimensional convex bodies look like? How does the spectrum of a random matrix behave as its dimension grows? How does the connectivity of a graph evolve as its size grows? In... 

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07.06.2023, 10:00  –  Campus Golm, Haus 9, Raum 0.17 (und online)
Forschungsseminar Wahrscheinlichkeitstheorie

Sandpile models and spanning trees

Wioletta Ruszel (Univ. Utrecht)

The sandpile model (aka chip-firing game) is a toy model for studying self-organized criticality (SOC). SOC models are characterized by displaying power-law probability behaviour of certain quantities... 

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07.06.2023, 13:00  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Gaussian upper heat kernel bounds and Sobolev inequalities on graphs with unbounded geometry

Dr. Christian Rose (Potsdam)

Abstract: On Riemannian manifolds the conjunction of Gaussian upper heat kernel bounds and the volume doubling property of balls are equivalent to Sobolev inequalities in arbitrarily small balls. The... 

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08.06.2023, 16:00  –  Raum 0.14
Forschungsseminar Differentialgeometrie

What is a jet bundle?

Christian Bär (UP)

I'll give a concise introduction to jet bundles of vector bundles. They allow to treat (higher) derivatives of sections in a coordinate invariant way without the need to introduce connections.... 

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08.06. bis 08.06.2023, 13:00 - 14:00  –  2.22
Forschungsseminar: Gruppen und Operatoralgebren

The dichotomy amenable/paradoxical in inverse semigroups and their uniform Roe algebras

Fernando Lledo (University Carlos III de Madrid)

In the present talk I will briefly review certain aspects of the dichotomy amenable/paradoxical in the category of metric spaces and inverse semigroups. Then I will address the question of defining a... 

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14.06.2023, 13:00  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Spectral minimal partitions of metric graphs: what and why?

James Kennedy

Abstract: SMPs offer a way of dividing a given object (domain, manifold or graph) into a given number of pieces in an ``analytically optimal'' way: typically, one attempts to minimise an energy... 

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15.06.2023, 16:00  –  Raum 0.14
Forschungsseminar Differentialgeometrie

Introduction to Fréchet Manifolds V

Christian Bär

Connections on Fréchet vector bundles and Fréchet Lie groups. [I.4.5-I.4.6]

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15.06. bis 15.06.2023, 13:00 - 14:00  –  2.22
Forschungsseminar: Gruppen und Operatoralgebren

Entropy, orbit equivalence, and the Rokhlin lemma

David Kerr (University of Münster)

I will discuss some recents applications and developments surrounding the Ornstein-Weiss Rokhlin lemma involving quantitative versions of orbit equivalence and questions of tileability in topological... 

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16.06.2023, 14:00 - 15:30  –  2.9.2.22
Institutskolloquium

On the design of scientific visualization

Nicolas Rougier (INRIA, Bordeaux)

This is a co-organized colloquium with the CRC 1294 Data Assimilation

Scientific visualization is classically defined as the process of graphically displaying scientific data. However, this process is... 

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16.06.2023, 13:15  –  Haus 9, Raum 2.22 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Duistermaat index and eigenvalue interlacing for self-adjoint extensions of a symmetric operator

Gregory Berkolaiko

Abstract:
Eigenvalue interlacing is a tremendously useful tool in linear algebra
and spectral analysis.  In its simplest form, the interlacing
inequality states that a rank-one positive perturbation... 

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23.06.2023, 10:15 - 11:15  –  Campus Golm, building 28, lecture hall 0.108
SFB-Kolloquium

Research data in mathematics, FAIRness, and the MaRDI consortium

Tabea Krause & Tabea Bacher, MaRDI

In this talk we will introduce a definition of 'research data' in mathematics which encompasses all digital objects you handle in the process of doing research. We will discuss how these data can be... 

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06.07. bis 06.07.2023, 13:00 - 14:00  –  2.22
Forschungsseminar: Gruppen und Operatoralgebren

Simplicity of crossed products by FC-hypercentral groups

Dan Ursu (University of Münster)

Results from a few years ago of Kennedy and Schafhauser characterize simplicity of reduced crossed products AxG, where A is a unital C*-algebra and G is a discrete group, under an assumption which... 

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12.07.2023, 15:30 - 17:45  –  Golm campus, Building 9, Room 2.22 and via zoom
Institutskolloquium

Arithmetic groups in action

Holger Kammeyer (Heinrich Heine University Düsseldorf) and Roman Sauer (Karlsruher Institut für Technologie)

15:30 Holger Kammeyer, "Can one recover arithmetic groups from permutation actions?"

16:30 Tea and coffee break

16:45 Roman Sauer, "Higher fixed point properties of arithmetic groups"
 

Abstract:

Holg... 

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14.07.2023, 10:15 - 11:15  –  Campus Golm, building 28, lecture hall 0.108
SFB-Kolloquium

SFB Colloquium with Karen Veroy-Grepl

Karen Veroy-Grepl

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20.07. bis 21.07.2023  –  Campus Griebnitzsee
SFB-Seminar

Rising Stars in Data Assimilation

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11.09. bis 13.09.2023  –  Campus Griebnitzsee
SFB 1294 - Annual Meeting

Potsdam DA Days 2023

The Potsdam DA Days 2023 will take place from September 11th to 13th at the Campus Griebnitzsee at the University of Potsdam. The event will be combined with the SFB Annual Meeting and will we opened... 

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11.09.2023, 09:30 - 10:30  –  Campus Griebnitzsee
Kálmán Lecture

6th Kálmán Lecture with Richard Nickl

Richard Nickl

This year Kálmán Lecture with Richard Nickl is opnener for the 2nd Potsdam DA Days.

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27.10.2023, 10:15 - 11:15  –  tba
SFB-Kolloquium

SFB 1294 Colloquium

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24.11.2023, 10:15 - 11:15  –  tba
SFB-Kolloquium

SFB 1294 Colloquium

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15.12.2023, 10:15 - 11:15  –  tba
SFB-Kolloquium

SFB 1294 Colloquium

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12.01.2024, 10:15 - 11:15  –  tba
SFB-Kolloquium

SFB 1294 Colloquium

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02.02.2024, 10:15 - 11:15  –  tba
SFB-Kolloquium

SFB 1294 Colloquium

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