English

Minimal sofic shift on a group that is not finitely-generated

Dynamical Systems 2025-07-10 v1 Group Theory Logic

Abstract

We prove that there exists a group which is not finitely generated, but admits a minimal sofic shift. This answers a question of Doucha, Melleray and Tsankov. The group is of the form (F4×F2)F(F_4 \times F_2) \rtimes F_{\infty}. The construction itself is based on simulation theory and properties of Thompson's~VV.

Keywords

Cite

@article{arxiv.2507.06599,
  title  = {Minimal sofic shift on a group that is not finitely-generated},
  author = {Ville Salo},
  journal= {arXiv preprint arXiv:2507.06599},
  year   = {2025}
}

Comments

14 pages

R2 v1 2026-07-01T03:52:45.652Z