Bill Casselman
William Allen Casselman (born November 27, 1941) is an American Canadian mathematician who works in representation theory and automorphic forms.[2] Casselman did his undergraduate work at Harvard College where his advisor was Raoul Bott and received his Ph.D from Princeton University in 1966 where his advisor was Goro Shimura.He was a visiting scholar at the Institute for Advanced Study in 1974, 1983, and 2001.[3] He emigrated to Canada in 1971 and is a Professor Emeritus in mathematics at the University of British Columbia.[1] Casselman specializes in representation theory, automorphic forms, geometric combinatorics, and the structure of algebraic groups.