English

On geodesic ray bundles in hyperbolic groups

Group Theory 2018-07-02 v1

Abstract

We construct a Cayley graph CayS(Γ)\mathbf{Cay}_S(\Gamma) of a hyperbolic group Γ\Gamma such that there are elements g,hΓg,h\in\Gamma and a point γΓ=CayS(Γ)\gamma \in \partial_\infty\Gamma = \partial_\infty\mathbf{Cay}_S(\Gamma) such that the sets RB(g,γ)\mathcal{RB}(g,\gamma) and RB(h,γ)\mathcal{RB}(h,\gamma) in CayS(Γ)\mathbf{Cay}_S(\Gamma) of vertices along geodesic rays from g,hg,h to γ\gamma have infinite symmetric difference; thus answering a question of Huang, Sabok and Shinko.

Keywords

Cite

@article{arxiv.1706.01979,
  title  = {On geodesic ray bundles in hyperbolic groups},
  author = {Nicholas Touikan},
  journal= {arXiv preprint arXiv:1706.01979},
  year   = {2018}
}

Comments

9 pages, 7 figures

R2 v1 2026-06-22T20:11:12.158Z