14.04.2026, 12:15  –  Raum 2.09.0.12
Forschungsseminar Angewandte Geometrie und Topologie

General meeting

This will be an opportunity for us, the organisers, to introduce ourselves and talk you through what to expect in the seminar series during the semester.
The first actual talk will take place the... 

15.04. bis 15.04.2026, 10:15  –  Campus Golm, Haus 9, Raum 1.22
Forschungsseminar: Gruppen und Operatoralgebren

On delocalised traces

Dr. Sanaz Pooya

Abstract:

Delocalised traces are tracial functionals on L¹(G) associated to conjugacy classes of a group G. When the conjugacy class is the identity, one recovers the von Neumann trace. For nontrivial... 

16.04.2026, 16:45  –  Raum 0.17
Verteidigung Masterarbeit / Master's Thesis Defence

Die Cheeger-Ungleichung und ihre Umkehrung

Lukas Rode

In meiner Masterarbeit untersuche ich den Zusammenhang zwischen der Geometrie kompakter riemannscher Mannigfaltigkeiten und dem Spektrum des Laplace-Beltrami-Operators. Im Mittelpunkt steht die... 

16.04.2026, 16:15  –  Raum 0.17
Forschungsseminar Differentialgeometrie

De Rham Cohomology

Raffael Grundmann

De Rham’s theorem is a fundamental result in differential topology, establishing a connection between the topology of a smooth manifold and its differential forms. In this talk, we introduce de Rham... 

22.04.2026, 10:15  –  Haus 9, Raum 1.22
Forschungsseminar: Gruppen und Operatoralgebren

Homology and K-theory for self-similar group actions

Alistair Miller (KU Leuven)

Self-similar groups are groups of automorphisms of infinite rooted trees obeying a simple but powerful rule. Under this rule, groups with exotic properties can be generated from very basic starting...