Separable Subsets of GFERF Negatively Curved Groups

Details Separable Subsets of GFERF Negatively Curved Groups Separable Subsets of GFERF Negatively Curved Groups

2005-02-04

arxiv.org/abs/math/0502101v2

J. of Algebra 304 (2006), No. 2, pp. 1090-1100

Mathematics

Group Theory

10 pages. Final version: several minor typos were corrected and a few things added in the introduction

Scientific paper

A word hyperbolic group $G$ is called GFERF if every quasiconvex subgroup
coincides with the intersection of finite index subgroups containing it. We
show that in any such group, the product of finitely many quasiconvex subgroups
is closed in the profinite topology on $G$.

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