Almost Invariant Sets
Group Theory
2015-01-05 v2 Geometric Topology
Abstract
A short proof of a conjecture of Kropholler is given. This gives a relative version of Stallings' Theorem on the structure of groups with more than one end. A generalisation of the Almost Stability Theorem is also obtained, that gives information about the structure of the Sageev cubing.
Cite
@article{arxiv.1409.6872,
title = {Almost Invariant Sets},
author = {M. J. Dunwoody},
journal= {arXiv preprint arXiv:1409.6872},
year = {2015}
}
Comments
13 pages, 3 figures