English

On the group of a rational maximal bifix code

Group Theory 2023-05-18 v1

Abstract

We give necessary and sufficient conditions for the group of a rational maximal bifix code ZZ to be isomorphic with the FF-group of ZFZ\cap F, when FF is recurrent and ZFZ\cap F is rational. The case where FF is uniformly recurrent, which is known to imply the finiteness of ZFZ\cap F, receives special attention. The proofs are done by exploring the connections with the structure of the free profinite monoid over the alphabet of FF.

Keywords

Cite

@article{arxiv.1811.03185,
  title  = {On the group of a rational maximal bifix code},
  author = {Jorge Almeida and Alfredo Costa and Revekka Kyriakoglou and Dominique Perrin},
  journal= {arXiv preprint arXiv:1811.03185},
  year   = {2023}
}
R2 v1 2026-06-23T05:08:25.036Z