Some examples of separable convex-cocompact subgroups

Mark Hagen, Alessandro Sisto

Research output: Contribution to journalArticlepeer-review

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Reid asked whether all convex-cocompact subgroups of mapping class groups are separable. Using a construction of Manning-Mj-Sageev, we give examples of separable convex-cocompact subgroups that are free of arbitrary finite rank, while prior examples seem to all be virtually cyclic.
Original languageEnglish
Pages (from-to)2242-2257
Number of pages16
JournalBulletin of the London Mathematical Society
Issue number5
Early online date6 May 2023
Publication statusPublished - Oct 2023


  • math.GR
  • math.GT


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