JSJ decompositions of doubles of free groups
Group Theory
2020-04-15 v2
Abstract
We classify all possible JSJ decompositions of doubles of free groups of rank two and we then compute the Makanin-Razborov diagram of a particular double of a free group and deduce that in general limit groups are not freely subgroup separable.
Keywords
Cite
@article{arxiv.1611.01424,
title = {JSJ decompositions of doubles of free groups},
author = {Simon Heil},
journal= {arXiv preprint arXiv:1611.01424},
year = {2020}
}
Comments
18 pages, added a missing case in the main theorem, multiple small improvements