Lewis Robertson, professor of mathematics, emeritus, passed away Dec. 22, 2018, at the age of 80. Robertson received his BS and MS from the University of Chicago and his PhD from the University of California—Los Angeles. He came to Wesleyan with tenure in 1970 after serving as an assistant professor at the University of Washington, and he remained at Wesleyan for 28 years until his retirement in 1998. Robertson’s scholarly research focused on Lie groups, topological groups, and representation theory. His PhD thesis was on algebra, influenced by topology, and that remained his primary interest throughout his career. He published 23…