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arxiv: 1706.01979 · v1 · pith:E25UYBBRnew · submitted 2017-06-06 · 🧮 math.GR

On geodesic ray bundles in hyperbolic groups

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

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