Speaker: Rémi Boutonnet (Univ. Bordeaux)
Title: Properly proximal groups and their von Neumann algebras
Time/Date: 4:45-6:15pm, June 25 (Thu.), 2020
Room: This will be an online seminar on Zoom. Please ask Kawahigashi for the Zoom link.
Abstract: In this talk I will explain joint work with A. Ioana and J. Peterson, in which we prove structural results for the von Neumann algebras associated with semi-simple lattices, like SL(n,Z) for arbitrary n > 1. This is based on a weakening of Ozawa's bi-exactness. This weaker property is satisfied by many groups while it remains useful for von Neumann algebraic purposes.