Andrew Francis is deputy dean of the School of Computer, Data and Mathematical Sciences at Western Sydney University. His current research focuses a wide range of problems, mostly in biology, that require mathematical approaches from algebra, combinatorics, and graph theory. Aidan Sims is a professor of pure mathematics in the School of Mathematics & Applied Statistics, which belongs to the Faculty of Engineering and Information Sciences at the University of Wollongong. He is a member of the Institute for Noncommutative Analysis, a research center of the university's Institute for Mathematics and Its Applications.