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We show that the group von Neumann algebra L(G) of a hyperbolic group is strongly solid, meaning: for any diffuse amenable subalgebra A of L(G), the normalizer of A inside L(G) is amenable (theorem due to I. Chifan and T. Sinclair, 2011). This result extends Ozawa's solidity result. The proof is based on a different and recent approach following the work of Boutonnet and Carderi, 2014.

# Operator Algebra Seminars

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Wed., Jul. 10, 2019 2:00 p.m.
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Location: Administration-Humanities Building (AH) 348
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**Speaker:** Daniel Drimbe, University of Regina

**Title:** Solidity results in von Neumann algebras

**Abstract:**