The topics included in this proceedings cover both mathematics and computer science. They include Codes, Free Monoids, Transformation Semigroups, Automata, Form

The research results published in this set of proceedings range from pure semigroup theory to theoretical computer science, in particular formal languages and a

The research results published in this volume range from pure mathematical theory (semigroup theory, discrete mathematics, and so on) to theoretical computer sc

This book constitutes the refereed proceedings of the 13th International Conference on Combinatorics on Words, WORDS 2021, held virtually in September 2021. The