English

Irrational eigenvalues of almost expansive cellular automata

Dynamical Systems 2022-08-24 v2

Abstract

We show that an almost expansive cellular automaton according to Gilman's classification cannot have irrational eigenvalues. This completes the proof that any surjective cellular automaton cannot have irrational eigenvalues for the uniform measure.

Cite

@article{arxiv.1911.02474,
  title  = {Irrational eigenvalues of almost expansive cellular automata},
  author = {Rezki Chemlal},
  journal= {arXiv preprint arXiv:1911.02474},
  year   = {2022}
}

Comments

Major error in the proof of the main result

R2 v1 2026-06-23T12:07:36.117Z