A 1-cohomology characterization of property (T) in von Neumann algebras

Abstract

We obtain a characterization of property (T) for von Neumann algebras in terms of 1-cohomology similar to the Delorme-Guichardet Theorem for groups.

Final version

Cited by in corpus (3)

• L^2-rigidity in von Neumann algebras
• On Ozawa's Property for Free Group Factors
• On the Superrigidity of Malleable Actions with Spectral Gap