pith. sign in

arxiv: 1609.07058 · v1 · pith:T2JCCMEOnew · submitted 2016-09-22 · 🧮 math.GR

Presentations of generalisations of Thompson's group V

classification 🧮 math.GR
keywords conditionsgeneralgroupsundercentralisersfindfinitefinitely
0
0 comments X
read the original abstract

We consider generalisations of Thompson's group $V$, denoted by $V_r(\Sigma)$, which also include the groups of Higman, Stein and Brin. It was shown by the authors in [20] that under some mild conditions these groups and centralisers of their finite subgroups are of type $\mathrm{F}_\infty$. Under more general conditions we show that the groups $V_r(\Sigma)$ are finitely generated and, under the mild conditions mentioned above, we see that they are finitely presented and give a recipe to find explicit presentations. For the centralisers of finite subgroups we find a suitable infinite presentation and then apply a general procedure to shorten this presentation. In the appendix, we give a proof of this general shortening procedure.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.