English

Right-angled Artin groups and curve graphs of nonorientable surfaces

Geometric Topology 2023-08-25 v1 Group Theory

Abstract

Let NN be a closed nonorientable surface with or without marked points. In this paper we prove that, for every finite full subgraph Γ\Gamma of Ctwo(N)\mathcal{C}^{\mathrm{two}}(N), the right-angled Artin group on Γ\Gamma can be embedded in the mapping class group of NN. Here, Ctwo(N)\mathcal{C}^{\mathrm{two}}(N) is the subgraph, induced by essential two-sided simple closed curves in NN, of the ordinal curve graph C(N)\mathcal{C}(N). In addition, we show that there exists a finite graph Γ\Gamma which is not a full subgraph of Ctwo(N)\mathcal{C}^{\mathrm{two}}(N) for some NN, but the right-angled Artin group on Γ\Gamma can be embedded in the mapping class group of NN.

Keywords

Cite

@article{arxiv.2105.07559,
  title  = {Right-angled Artin groups and curve graphs of nonorientable surfaces},
  author = {Takuya Katayama and Erika Kuno},
  journal= {arXiv preprint arXiv:2105.07559},
  year   = {2023}
}

Comments

16 pages, 7 figures