18.05.2022, 14:00  –  Campus Golm, Haus 9, Room 2.22 + Zoom
Institutskolloquium

Amenability — From the Banach-Tarski paradoxon to Gromov’s monster groups

Kristin Courtney (Uni Münster) and Siegfried Echterhoff (Uni Münster)

14:00 Kristin Courtney (Uni Münster): Approximations on Groups

14:45 Tea and Coffee Break

15:15 Siegfried Echterhoff (Uni Münster): Amenable group actions on spaces and operator algebras

Please... 

18.05.2022, 13:30  –  Haus 9, Raum 0.17 und Zoom
Forschungsseminar Diskrete Spektraltheorie

Uniformity of cocycles

Prof. Daniel Lenz (Universität Jena)

Abstract: Uniformity of continuous SL(2,R) valued cocycles over uniquely dynamical systems has featured in various contexts. Walters asked in '86 whether every uniquely ergodic system admits a... 

18.05.2022, 13 Uhr  –  Golm, Haus 9, Raum 1.22 + Zoom
Verteidigung der Dissertation / Defence of the PhD thesis

Structure formation and identification in geometrically driven soft matter systems

Tobias Hain

Das Thema der von Tobias Martin Hain in der Wissenschaftsdisziplin " Mathematische Physik" eingereichten Dissertation lautet:

Structure formation and identification in geometrically driven soft matter... 

19.05. bis 19.05.2022, 14:00-15:30  –  C6H05 Tübingen, 2.09.2.22 Campus Golm
Geometric Analysis, Differential Geometry and Relativity

Solving initial data for Kaluza-Klein spacetimes

Caterina Vâlcu

We study the constraint equations for Einstein equations on manifolds of the form $\mathbb{R}^{n+1}\times T^m$, where $T^m$ is a flat m-dimensional torus. Spacetimes with compact directions were... 

19.05.2022, 16:00-17:30  –  2.09.0.14
Forschungsseminar Differentialgeometrie

Non-local boundary conditions for the Dirac operator on spacetimes with timelike boundary

Penelope Gehring

Non-local boundary conditions - for example the Atiyah-Patodi-Singer (APS) conditions -  for Dirac operators on Riemannian manifolds are rather well-understood, while not much is known for such...