Jean-Paul Allouche is Directeur de Recherche at CNRS, LRI, Orsay. He has written some go papers in number theory and combinatorics on words. He is on the editorial board of Advances in Applied Mathematics and on the scientific committee of the Journal de Théorie des Nombres de Bordeaux. Jeffrey Shallit is Professor of Computer Science at the University of Waterloo. He has written 80 articles on number theory, algorithms, formal languages, combinatorics on words, computer graphics, history of mathematics, algebra, and automata theory.
He is the editor-in-chief of the Journal of Integer Sequences and co-author of Algorithmic Number Theory.