English

Finitely presented kernels of homomorphisms from hyperbolic groups onto free abelian groups

Group Theory 2023-09-08 v1

Abstract

For every m2m\geq 2 we produce an example of a non-hyperbolic finitely presented subgroup H<GH < G of a hyperbolic group GG, which is the kernel of a surjective homomorphism ϕ:GZm\phi: G\to \mathbb{Z}^m. The examples we produce are of finiteness type F2F_2 and not F3F_3.

Keywords

Cite

@article{arxiv.2309.03794,
  title  = {Finitely presented kernels of homomorphisms from hyperbolic groups onto free abelian groups},
  author = {Robert Kropholler and Claudio Llosa Isenrich},
  journal= {arXiv preprint arXiv:2309.03794},
  year   = {2023}
}

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15 pages