Andrew Casson

Andrew Casson
Andrew Casson at Berkeley in 1991
Photo courtesy George M. Bergman
Born1943 (1943)
DiedSeptember 5, 2025(2025-09-05) (aged 81–82)
Fairfield, Connecticut, U.S.A.
Alma materUniversity of Liverpool
AwardsOswald Veblen Prize in Geometry (1991)
Fellow of the Royal Society (1998)
Scientific career
FieldsMathematics
InstitutionsYale University
University of California, Berkeley
University of Texas at Austin
Doctoral advisorC. T. C. Wall
Doctoral students(in chronological order) Andrew Ranicki, Darren Long, Ken'ichi Kuga, Geoffrey Mess, Kevin Walker, Gregory Kuperberg, Marc Shepard, Douglas Jungreis, Edith Starr, Micah Fogel, Michah Sageev, Luis Valdez Sanchez, Daniel Allcock, Linda Green, Inkang Kim, Mayhew Wolff, Mahan Mitra, Kevin Hartshorn, Aaron Abrams, Stephen Bigelow, Danny Calegari, Sungjoon Ko, Karen Edwards, Saul Schleimer, Sang-Hyun Kim, Joan Licata, Helen Wong

Andrew John Casson FRS (1943 – September 5, 2025) was a mathematician, working in the area of geometric topology. Casson was the Philip Schuyler Beebe Professor of Mathematics at Yale University until his retirement.