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# Operator Algebra Seminars

**
Wed., Jul. 3, 2019 2:00 p.m.
**

**
Location: Administration-Humanities Building (AH) 348
**

**Speaker:** Daniel Drimbe, University of Regina

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

**Abstract:**

We show that the von Neumann algebra L(G) of a hyperbolic group G is solid, meaning: for any diffuse subalgebra A of L(G), the relative commutant of A inside L(G) is amenable (theorem due to N. Ozawa, 2003). The proof is based on a different and recent approach following the work of Boutonnet and Carderi, 2014.