Sigma 1 of PL-homeomorphism groups
Group Theory
2015-07-02 v1
Abstract
I survey the known results about the invariant Sigma 1 of groups of PL-homeomorphisms of a compact interval and supplement them with new results about Sigma 1 of PL-homeomorphism groups of a half line or a line. The proofs are based on the Cayley-graph definition of the invariant.
Keywords
Cite
@article{arxiv.1507.00135,
title = {Sigma 1 of PL-homeomorphism groups},
author = {Ralph Strebel},
journal= {arXiv preprint arXiv:1507.00135},
year = {2015}
}
Comments
18 pages