Event
Sami Douba (平特五不中)
Wednesday, September 15, 2021 15:00to16:00
Burnside Hall
Room 920, 805 rue Sherbrooke Ouest, Montreal, QC, H3A 0B9, CA
The Geometric Group Theory Seminar
Title: Proper CAT(0) actions of unipotent-free linear groups
Abstract: Button observed that finitely generated linear groups containing no nontrivial unipotent matrices behave much like groups admitting proper actions by semisimple isometries on complete CAT(0) spaces. It turns out that any finitely generated linear group possesses an action on such a space whose restrictions to unipotent-free subgroups are in some sense tame. We discuss this phenomenon and some of its implications for the representation theory of certain 3-manifold groups.
We will soon have the seminar website up and running:
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