Wednesday, October 21, 2015 — 2:30 PM EDT

Matt Kennedy, Department of Pure Mathematics, University of Waterloo

“Invariant random subgroups and uniformly recurrent subgroups”

I will introduce the notions of invariant random subgroups and uniformly recurrent sub- groups. These structures are probabilistic and dynamical generalizations of the notion of a normal subgroup, using ideas from both algebra and analysis. They arise in the study of var- ious kinds of rigidity phenomena for representations of groups. I will discuss results of mine and others that make use of these ideas, and mention some open problems.

MC 5501

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