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Gbor Elek, Endre Szab

On sofic groups

Answering some questions of Weiss in [B. Weiss. Sofic groups and dynamical systems. (Ergodic theory and harmonic analysis, Mumbai, 1999.) Sankhya Ser. A. 62 (2000), 350-359.], we prove that a free product of sofic groups is sofic and that amenable extensions of sofic groups are sofic. We also give an example of a finitely generated sofic group that is not residually amenable.

Journal of Group Theory, Walter de Gruyter

Print ISSN: 1433-5883
Volume: 9, 03/2006
Pages: 161 - 171

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