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Conjugator lengths in hierarchically hyperbolic groups

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arxiv 1808.09604 v3 pith:ICQZ3M2A submitted 2018-08-29 math.GR math.GT

classification math.GRmath.GT
keywords groupsconjugatorclasselementslengthshortestboundconjugate
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abstract

In this paper, we establish upper bounds on the length of the shortest conjugator between pairs of infinite order elements in a wide class of groups. We obtain a general result which applies to all hierarchically hyperbolic groups, a class which includes mapping class groups, right-angled Artin groups, Burger--Mozes-type groups, most $3$--manifold groups, and many others. In this setting we establish a linear bound on the length of the shortest conjugator for any pair of conjugate Morse elements. For a subclass of these groups, including, in particular, all virtually compact special groups, we prove a sharper result by obtaining a linear bound on the length of the shortest conjugator between a suitable power of any pair of conjugate infinite order elements.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Hierarchically hyperbolic groups and uniform exponential growth

    math.GR 2019-09 conditional novelty 8.0 of 10

    A virtually torsion-free hierarchically hyperbolic group either has uniform exponential growth or its Cayley graph is quasi-isometric to Z times a space.

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