Speaker: Martin Kassabov, Cornell University
Title: Subspace arrangements and property T
Abstract: I will mainly talk about (my viewpoint at) a method for proving property T started by Dymara and Januszkiewicz. Their original motivation came from groups action on dimensional building, but the refined idea does not used anything more angles between subspaces in an finite dimensional Euclidean space. Parts of the talk are based on a work of M. Ershov and A. Jaikin.
