English

Intertwining of Complementary Thue-Morse Factors

Formal Languages and Automata Theory 2022-03-08 v1 Discrete Mathematics Combinatorics

Abstract

We consider the positions of occurrences of a factor xx and its binary complement x\overline{x} in the Thue-Morse word t=01101001{\bf t} = {\tt 01101001} \cdots, and show that these occurrences are "intertwined" in essentially two different ways. Our proof method consists of stating the needed properties as a first-order logic formula φ\varphi, and then using a theorem-prover to prove φ\varphi.

Cite

@article{arxiv.2203.02917,
  title  = {Intertwining of Complementary Thue-Morse Factors},
  author = {Jeffrey Shallit},
  journal= {arXiv preprint arXiv:2203.02917},
  year   = {2022}
}
R2 v1 2026-06-24T10:03:33.691Z