During the academic year 2019-2020, I am organizing the weekly seminar Groups, Actions and von Neumann algebras at the Université Paris-Sud, Orsay.
The seminar features both research and introductory talks on topics including analytic, geometric and measured group theory, ergodic theory and von Neumann algebras.
Meetings
Monday September 23
Cyril Houdayer (Université Paris-Sud)
Stationary characters on lattices of semisimple Lie groups (part I)
Monday September 30
Cyril Houdayer (Université Paris-Sud)
Stationary characters on lattices of semisimple Lie groups (part II)
Monday October 14
Jean Lécureux (Université Paris-Sud)
Strong property (T) for groups acting on affine buildings
Monday November 18
Yusuke Isono (RIMS, Kyoto University)
Unitary conjugacy for type III subfactors and W*-superrigidity
Monday November 25
Amine Marrakchi (CNRS & ENS Lyon)
Ergodic theory of affine isometric actions on Hilbert spaces
Monday December 2
Sven Raum (Stockholm University)
C*-superrigidity of 2-step nilpotent groups