English

Random Quotients of Free Products

Group Theory 2025-02-13 v1

Abstract

We introduce a density model for random quotients of a free product of finitely generated groups. We prove that a random quotient in this model has the following properties with overwhelming probability: if the density is below 1/21/2, the free factors embed into the random quotient and the random quotient is hyperbolic relative to the free factors. Further, there is a phase transition at 1/21/2, with the random quotient being a finite group above this density. If the density is below 1/61/6, the random quotient is cubulated relative to the free factors. Moreover, if the free factors are cubulated, then so is the random quotient.

Keywords

Cite

@article{arxiv.2502.08630,
  title  = {Random Quotients of Free Products},
  author = {Eduard Einstein and Suraj Krishna M S and MurphyKate Montee and Thomas Ng and Markus Steenbock},
  journal= {arXiv preprint arXiv:2502.08630},
  year   = {2025}
}

Comments

43 pages, 9 figures