Hyperbolic hyperbolic-by-cyclic groups are cubulable
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 $\mathbb{Z}^2$-subgroups.
- Publication:
-
arXiv e-prints
- Pub Date:
- June 2023
- DOI:
- 10.48550/arXiv.2306.15054
- arXiv:
- arXiv:2306.15054
- Bibcode:
- 2023arXiv230615054D
- Keywords:
-
- Mathematics - Group Theory;
- 20F65;
- 20E36;
- 20E08;
- 20F67
- E-Print:
- Incorporated referee suggestions. Final version, to appear in Geom. Topol