Hyperbolic hyperbolic-by-cyclic groups are cubulable
Group Theory
2025-01-08 v2
Abstract
We show that the mapping torus of a hyperbolic group by a hyperbolic automorphism is cubulable. Along the way, we (i) give an alternate proof of Hagen and Wise's theorem that hyperbolic free-by-cyclic groups are cubulable, and (ii) extend to the case with torsion Brinkmann's thesis that a torsion-free hyperbolic-by-cyclic group is hyperbolic if and only if it does not contain -subgroups.
Cite
@article{arxiv.2306.15054,
title = {Hyperbolic hyperbolic-by-cyclic groups are cubulable},
author = {François Dahmani and Suraj Krishna M S and Jean Pierre Mutanguha},
journal= {arXiv preprint arXiv:2306.15054},
year = {2025}
}
Comments
Incorporated referee suggestions. Final version, to appear in Geom. Topol