URegina-PIMS Distinguished Lecture: Stefaan Vaes

  • Date: 02/11/2022
  • Time: 08:30
Stefaan Vaes, KU Leuven

University of Regina


Classification questions in operator algebras and ergodic theory


The theme of this lecture is the dichotomy between amenability and non-amenability, both in operator algebras and ergodic theory. I will review the fundamental classification results for amenable von Neumann algebras due to Connes and Haagerup. Then I will focus on the nonamenable case, where Popa's deformation/rigidity theory has led to striking rigidity theorems for von Neumann algebras associated with groups and actions of groups on measure spaces. I will survey some recent results, including the computation of invariants of II₁ factors and the challenging problem of deciding when II₁ factors can be embedded one into the other.


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Other Information: 

This is an online event beginning at 8:30am PST / 10:30am CST 

Registration is required


For more information visit https://www.uregina.ca/science/mathstat/events/2022/02/20220211-PIMS.html