開催日時
2023/07/11 火 15:00 - 16:30
場所
6号館609号室
講演者
Charles Frances
講演者所属
IRMA, The University of Strasbourg
概要
In this talk, we will show how the notion of coarse embedding, which was introduced by M. Gromov in the 80's, can be used to study actions of discrete groups preserving a rigid geometric structure. We will particularly emphasize the case of isometry groups of Lorentz manifolds, and will prove a Tits alternative for those groups.