Groups and Operator Algebras Seminar

Speaker:  Adriana Fernández i Quero (KU Leuven)

Title:  W*-superrigidity for property (T) groups with infinite center

Abstract:  In this talk we consider a natural version of Connes' Rigidity Conjecture that involves property (T) groups with infinite center. Utilizing techniques at the intersection of von Neumann algebras and geometric group theory, we establish several cases where this conjecture holds. In particular, we provide the first example of a W*-superrigid property (T) group with infinite center. This is joint work with Ionut Chifan, Denis Osin and Hui Tan.