English

Accessibility of partially acylindrical actions

Group Theory 2021-02-22 v1

Abstract

In a pervious paper Weidmann shows that there a bound on the number of orbits of edges in a tree on which a finitely generated group acts (k,C)(k,C)-acylindrically. In this paper we extend this result to actions which are kk-acylindrical except on a family of groups with "finite height". We also give an example which gives a negative result to a conjecture of Weidmann from the same paper and produce a sharp bound for groups acting kk--acylindrically.

Keywords

Cite

@article{arxiv.2102.09887,
  title  = {Accessibility of partially acylindrical actions},
  author = {Michael Edward Hill},
  journal= {arXiv preprint arXiv:2102.09887},
  year   = {2021}
}

Comments

37 pages, first version

R2 v1 2026-06-23T23:19:27.960Z