A characterisation of virtually free groups
Group Theory
2011-11-04 v1
Abstract
We prove that a finitely generated group is virtually free if and only if there exists a generating set for and such that all -locally geodesic words with respect to that generating set are geodesic.
Keywords
Cite
@article{arxiv.1111.0771,
title = {A characterisation of virtually free groups},
author = {Robert H. Gilman and S. Hermiller and Derek F. Holt and Sarah Rees},
journal= {arXiv preprint arXiv:1111.0771},
year = {2011}
}