English

CAT(0) property and hyperbolicity of affine cactus groups

Group Theory 2026-05-29 v1 Geometric Topology

Abstract

We show that the affine cactus group is a CAT(0)(0) group for all degrees. Furthermore, we show that the affine cactus group AJ3AJ_3 of degree three is a hyperbolic group.

Keywords

Cite

@article{arxiv.2605.29422,
  title  = {CAT(0) property and hyperbolicity of affine cactus groups},
  author = {Takatoshi Hama},
  journal= {arXiv preprint arXiv:2605.29422},
  year   = {2026}
}

Comments

12 pages, 6 figures