English

On some algebraic and analytic properties of the finitely generated simple left orderable groups $G_{\rho}$

Group Theory 2025-09-15 v1

Abstract

In 20192019 Hyde and the second author constructed the first family of finitely generated, simple, left orderable groups. We prove that these groups are not finitely presentable, non-inner amenable, don't have Kazhdan's property (T)(T) (yet have property FA), and that their first l2l^2-Betti number vanishes. We also show that these groups are uniformly simple, providing examples of uniformly simple finitely generated left orderable groups. Finally, we also describe the structure of the groups GρG_{\rho} where ρ\rho is a periodic labeling.

Keywords

Cite

@article{arxiv.2509.09856,
  title  = {On some algebraic and analytic properties of the finitely generated simple left orderable groups $G_{\rho}$},
  author = {Pawel Aleksander Fedorynski and Yash Lodha},
  journal= {arXiv preprint arXiv:2509.09856},
  year   = {2025}
}