English

Conjugate subgroups and overgroups of $V_n$

Group Theory 2018-02-22 v2

Abstract

We describe subgroups and overgroups of the generalised Thompson groups VnV_n which arise via conjugation by rational homeomorphisms of Cantor space. We specifically consider conjugating VnV_n by homeomorphisms induced by synchronizing transducers and their inverses. Our descriptions of the subgroups and overgroups use properties of the conjugating transducer to either restrict or augment the action of VnV_n on Cantor space.

Keywords

Cite

@article{arxiv.1710.00913,
  title  = {Conjugate subgroups and overgroups of $V_n$},
  author = {Casey Donoven and Feyishayo Olukoya},
  journal= {arXiv preprint arXiv:1710.00913},
  year   = {2018}
}

Comments

26 pages; corrected some typos; new section added exploring simplicity of overgroups in general

R2 v1 2026-06-22T22:01:43.766Z