Heilbronn Colloquium 2022: Goulnara Arzhantseva

16 Jun 2022, by Caroline Perkins in Events

Wednesday 13 July 2022 at 16.00

Organised in collaboration with the School of Mathematics, University of Bristol, UK

Approximations of Infinite Groups

Goulnara Arzhantseva, University of Vienna, Austria

We discuss various still open questions on approximations of finitely generated groups, focusing on finite-dimensional approximations such as residual finiteness and soficity. We survey our results on the existence and stability of metric approximations. We suggest a few conjectures, e.g. on Gromov hyperbolic groups and their infinite monster limits. The setting is rather general and the involved concepts are transversal to various areas of mathematics. 

Based on joint works with Liviu Paunescu (Bucharest).

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