Forester's lattices and small non-Leighton complexes
Geometric Topology
2026-03-10 v3 Combinatorics
Group Theory
Abstract
We construct two CW-complexes and admitting a common, but not finite common, covering, where is homeomorphic to a complex with a single 2-cell.
Cite
@article{arxiv.2407.06680,
title = {Forester's lattices and small non-Leighton complexes},
author = {Natalia S. Dergacheva and Anton A. Klyachko},
journal= {arXiv preprint arXiv:2407.06680},
year = {2026}
}
Comments
6 pages. A Russian version of this paper is at http://halgebra.math.msu.su/staff/klyachko/papers.htm . V3: details are added, an error and misprints are corrected --- thanks to an anonymous referee