English

Surface Houghton groups

Geometric Topology 2023-04-11 v1 Group Theory

Abstract

For every n2n\ge 2, the {\em surface Houghton group} Bn\mathcal B_n is defined as the asymptotically rigid mapping class group of a surface with exactly nn ends, all of them non-planar. The groups Bn\mathcal B_n are analogous to, and in fact contain, the braided Houghton groups. These groups also arise naturally in topology: every monodromy homeomorphisms of a fibered component of a depth-1 foliation of closed 3-manifold is conjugate into some Bn\mathcal B_n. As countable mapping class groups of infinite type surfaces, the groups Bn\mathcal B_n lie somewhere between classical mapping class groups and big mapping class groups. We initiate the study of surface Houghton groups proving, among other things, that Bn\mathcal B_n is of type Fn1F_{n-1}, but not of type FPnFP_n, analogous to the braided Houghton groups.

Keywords

Cite

@article{arxiv.2304.04698,
  title  = {Surface Houghton groups},
  author = {Javier Aramayona and Kai-Uwe Bux and Heejoung Kim and Christopher J. Leininger},
  journal= {arXiv preprint arXiv:2304.04698},
  year   = {2023}
}

Comments

19 pages, 1 figure