On Eigenvalues of Free Group Endomorphisms
Group Theory
2012-06-26 v2 Geometric Topology
Abstract
Let \phi be an endomorphism of a finitely generated free group F, and let H be a finite-index subgroup of F that is invariant under \phi. The nonzero eigenvalues of \phi are contained in the eigenvalues of \phi restricted to H.
Cite
@article{arxiv.1206.4926,
title = {On Eigenvalues of Free Group Endomorphisms},
author = {Daniel S. Silver and Susan G. Williams},
journal= {arXiv preprint arXiv:1206.4926},
year = {2012}
}
Comments
5 pages, no figures