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Department of Mathematics,
Department of Mathematics,
University of California San Diego
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Operator Algebras Seminar
Daniel Drimbe
UCSD
Cocycle superrigidity for coinduced actions
Abstract:
Popa's deformation/rigidity theory led to a remarkable cocycle superrigidity theorem for Bernoulli actions of groups with property (T) (2005) and of products of non-amenable groups (2006). More precisely, Popa obtained that every cocycle for such an action with values in a countable (and more generally, in a $\mathcal U_{fin}$) group is cohomologous with a group homomorphism. In this talk, we will present a generalization of this theorem to coinduced actions.
Host: Adrian Ioana
November 17, 2015
10:00 AM
AP&M 5402
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