Boundary Actions and Actions on $L^p$-Spaces

par Prof. Ursula Hamenstädt (Universität Bonn)

lundi 6 mai 2019, 14:30 → 15:45 Europe/Paris

Amphithéâtre Léon Motchane (IHES)

We discuss some quite general properties of infinite discrete groups G acting on compact spaces. The spaces we mainly have in mind are horoboundaries of metric spaces which admit an isometric action of G. As an application, we show that the mapping class group of a surface of finite type admits a proper action on some $L^p$-space.