Let f:Z+→R be an increasing function. We say that an infinite word w is abelian f(n)-saturated if each factor of length n contains Θ(f(n)) abelian nonequivalent factors. We show that binary infinite words cannot be abelian n2-saturated, but, for any ε>0, they can be abelian n2−ε-saturated. There is also a sequence of finite words (wn), with |wn|=n, such that each wn contains at least Cn2 abelian nonequivalent factors for some constant C>0. We also consider saturated words and their connection to palindromic richness in the case of equality and k-abelian equivalence.

Original languageEnglish
Pages (from-to)154-160
Number of pages7
JournalTheoretical Computer Science
Volume792
DOIs
StatePublished - 5 Nov 2019

    Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

    Research areas

  • Abelian equivalence, Combinatorics on words, Palindrome, Rich word

ID: 35281074