Fixed points for group actions on finite dimensional non-positively curved spaces

開催日時: 
2018/11/13 Tue 15:00 - 16:30
場所: 
6号館609号室
講演者: 
加藤本子
講演者所属: 
東京大学
概要: 

We give a sufficient condition for group elements to have fixed points for semi-simple actions on finite dimensional CAT(0) spaces. As an application, we show that Richard Thompson's groups T and V have global fixed points when they act on finite-dimensional CAT(0) spaces by semi-simple isometries.