Edward T. Cline died peacefully in Norman, Oklahoma, on March 23, 2012. He started his career in Minnesota when he came to the School of Mathematics as an Assistant Professor in 1966, having just obtained his Ph.D. from Caltech under Marshall Hall Jr. He left Minnesota in 1972 to go to the University of Virginia, after which he went to Clark University in 1975. Subsequently he moved to the University of Oklahoma in 1989 where he was a member of the faculty until his retirement in 2006.
During his time at Minnesota, Ed’s research work was on finite groups and their representations, extending the direction that his thesis had taken. In 1972 this direction changed slightly when he started a collaboration with Brian Parshall and Len Scott which was to last 40 years. The three authors, collectively known as CPS, produced 28 papers that were to have a very substantial impact on representation theory, notably of algebraic groups and of abstract algebras. Their work was distinguished not just by its depth, but also by its broad and innovative perspective, with many of their techniques and concepts becoming standard. It was quite possibly the longest three-author collaboration there has ever been in the history of mathematics.
During the last 11 years of his life Ed battled against dementia and Parkinson’s disease. He is survived by his wife, children and grandchildren.