English

On completely multiplicative automatic sequences

Combinatorics 2019-11-28 v3 Number Theory

Abstract

In this article we prove that all completely multiplicative automatic sequences (an)nN(a_n)_{n \in \mathbf{N}} defined on C\mathbf{C}, vanishing or not, can be written in the form an=bnχna_n=b_n\chi_n where (bn)nN(b_n)_{n \in \mathbf{N}} is an almost constant sequence, and (χn)nN(\chi_n)_{n \in \mathbf{N}} is a Dirichlet character.

Cite

@article{arxiv.1903.04385,
  title  = {On completely multiplicative automatic sequences},
  author = {Shuo Li},
  journal= {arXiv preprint arXiv:1903.04385},
  year   = {2019}
}
R2 v1 2026-06-23T08:04:25.788Z