Oberseminar Geometrie, Topologie und Analysis

H. Geiges, A. Lytchak, G. Marinescu, S. Sabatini, G. Thorbergsson

Wintersemester 2015/16

Freitag, 10:30-11:30, Seminarraum 2 (Raum 204)

6.11.15 Pierre-Emmanuel Caprace (Louvain)
On sharply multiply transitive locally compact groups

Abstract: A permutation group is called sharply n-transitive if it acts freely and transitively on the set of ordered n-tuples of distinct points. The investigation of such permutation groups is a classical branch of group theory; it led Emile Mathieu to the discovery of the smallest finite simple sporadic groups in the 1860s. In this talk I will discuss the case where the permutation group is assumed to be a locally compact transformation group, and explain how this set-up is related to Gromov hyperbolicity and to arithmetic lattices in products of trees.
11.12.15 Milena Pabiniak (IST Lisboa, z.Zt. Köln)
Arnold conjectures in symplectic and contact geometry and introduction to the generating functions technique

18.12.15 Jonathan Fisher (Hamburg)
Localization for K-contact manifolds

29.1.16 Claudio Gorodski (São Paulo)
Representations of compact Lie groups and their orbit spaces

H. Geiges, 5.4.02