On sofic groups
On sofic groups
复制标题
DOI:
10.1515/jgt.2006.011
复制
发表时间:
2003-05
期刊:
影响因子:
--
通讯作者:
G. Elek;E. Szabó
中科院分区:
文献类型:
--
作者:
G. Elek;E. Szabó
Abstract 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.