English

Strongly verbally closed groups

Group Theory 2017-07-19 v2

Abstract

It was recently proven that all free and many virtually free verbally closed subgroups are algebraically closed in any group. We establish sufficient conditions for a group that is an extension of a free non-abelian group by a group satisfying a non-trivial law to be algebraically closed in any group in which it is verbally closed. We apply these conditions to prove that the fundamental groups of all closed surfaces (except the Klein bottle) and almost all free products of groups satisfying a non-trivial law are algebraically closed in any group in which they are verbally closed.

Keywords

Cite

@article{arxiv.1707.02464,
  title  = {Strongly verbally closed groups},
  author = {Andrey M. Mazhuga},
  journal= {arXiv preprint arXiv:1707.02464},
  year   = {2017}
}

Comments

14 pages

R2 v1 2026-06-22T20:41:27.760Z