Cecil Clyde Rousseau, Jr. (January 13, 1938 Philadelphia - April 10, 2020 Memphis)[1][2] was a mathematician and author who specialized in graph theory and combinatorics.
He was a professor at The University of Memphis starting in 1970 until retiring in 2008, and was involved with USAMO in many capacities, including serving as chair.
[3] Rousseau received his Ph.D. in Physics in 1968 from Texas A&M University.
[5] He also frequently collaborated with Memphis faculty Ralph Faudree and Dick Schelp.
In 2012, Rousseau received the Paul Erdős Award from the World Federation of National Mathematics Competitions.