High Quality Content by WIKIPEDIA articles! John Willard Milnor (born February 20, 1931) is an American mathematician known for his work in differential topology, K-theory and dynamical systems. He won the Fields Medal in 1962, the Wolf Prize in 1989, and the Abel Prize in 2011. Milnor is a distinguished professor at Stony Brook University. His wife, Dusa McDuff, is a professor of mathematics at Barnard College.