Semi-free subgroups of a profinite surface group
Group Theory
2018-04-24 v1
Abstract
We show that every closed normal subgroup of infinite index in a profinite surface group is contained in a semi-free profinite normal subgroup of . This answers a question of Bary-Soroker, Stevenson, and Zalesskii.
Keywords
Cite
@article{arxiv.1804.07800,
title = {Semi-free subgroups of a profinite surface group},
author = {Matan Ginzburg and Mark Shusterman},
journal= {arXiv preprint arXiv:1804.07800},
year = {2018}
}