English

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 Z2\mathbb{Z}^2-subgroups.

Keywords

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

R2 v1 2026-06-28T11:15:06.459Z