Hyperbolicity of the complex of free factors
Group Theory
2014-01-23 v4 Geometric Topology
Abstract
We develop the geometry of folding paths in Outer space and, as an application, prove that the complex of free factors of a free group of finite rank is hyperbolic.
Cite
@article{arxiv.1107.3308,
title = {Hyperbolicity of the complex of free factors},
author = {Mladen Bestvina and Mark Feighn},
journal= {arXiv preprint arXiv:1107.3308},
year = {2014}
}
Comments
bibliography updated, minor corrections, to appear in Advances in Mathematics