Webrelaunch 2020

AG Topologie (Wintersemester 2016/17)

Dies ist ein Lese-Seminar, in dem aktuelle Forschungsergebnisse aus den Bereichen geometrische Gruppentheorie, Topologie und Geometrie behandelt werden.

Seminar: Donnerstag 15:45-17:15 SR 2.058 Beginn: 27.10.2016
Seminarleitung Prof. Dr. Roman Sauer
Sprechstunde: nach Vereinbarung
Zimmer 1.001 Kollegiengebäude Mathematik (20.30)
Email: roman.sauer@kit.edu
27.10.2016 Introduction to simplicial volume and bounded cohomology
Sabine Braun

03.11.2016 Diffusion of chains and amenable groups
Federico Franceschini

10.11.2016 tba

17.11.2016 Title: Topological waist inequalities
Meru Alagalingam

Abstract: Gromov proved that every continuous map f: S^n \to {\mathbb R}^q from the n-dimensional standard sphere admits a point y \in {\mathbb R}^q such that the preimage f^{-1}(y) has (n-q)-dimensional Hausdorff volume at least \mathrm{vol}(S^{n-q}).

Every continuous map f: {\mathbb T}^n \to {\mathbb R}^q from the n-dimensional torus admits a point y \in {\mathbb R}^q such that the cohomology of the preimage f^{-1}(y) has rank at least (n-q).

We will explain why statements of this type are important and how they can be proven by the same technique.

24.11.2016 Invariant random subgroups
Arie Levit

01.12.2016 tba

08.12.2016 tba

15.12.2016 Title: Borel equivalence relations and subadditive convergence
Felix Pogorzelski

Abstract: tba

22.12.2016 tba

12.01.2017 Singularities, Expanders and Topology of Maps
Federico Franceschini

19.01.2017 The space of negatively curved metrics (Special Talk)
Tom Farrell (Yau Mathematical Sciences Center, Tsinghua University Beijing)

26.01.2017 tba

02.02.2017 tba

09.02.2017 tba