On co-amenability for groups and von Neumann algebras

Nicolas Monod; Sorin Popa

arxiv: math/0301348 · v3 · submitted 2003-01-30 · 🧮 math.GR · math.OA

On co-amenability for groups and von Neumann algebras

Nicolas Monod , Sorin Popa This is my paper

classification 🧮 math.GR math.OA

keywords co-amenabilityalgebrasneumannaddressansweringaskeddescribingeymard

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We first show that co-amenability does not pass to subgroups, answering a question asked by Eymard in 1972. We then address co-amenability for von Neumann algebras, describing notably how it relates to the former.

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On co-amenability for groups and von Neumann algebras

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