Andrew Casson at Berkeley in 1991
Photo courtesy George M. Bergman
|Born||1943 (age 72–73)|
University of California, Berkeley
University of Texas at Austin
|Alma mater||University of Liverpool|
|Doctoral advisor||C. T. C. Wall|
|Doctoral students||Danny Calegari
Casson is the Philip Schuyler Beebe Professor of Mathematics at Yale University in the United States where he served as department chair between 2004 and 2007. His Ph.D. advisor at the University of Liverpool was C. T. C. Wall, but he never completed his doctorate; instead what would have been his Ph.D. thesis became his fellowship dissertation as a research fellow at Trinity College, Cambridge. He was Professor of Mathematics at the University of Texas at Austin between 1981 and 1986, at the University of California, Berkeley, from 1986 to 2000, and has been at Yale since 2000.
Casson has worked in both high-dimensional manifold topology and 3- and 4-dimensional topology, using both geometric and algebraic techniques. Among other discoveries, he contributed to the disproof of the manifold Hauptvermutung, introduced the Casson invariant, a modern invariant for 3-manifolds, and Casson handles, used in Freedman's proof of the 4-dimensional Poincaré conjecture.
- Andrew Casson named the Beebe Professor of Mathematics, Yale Daily Bulletin, June 10, 2011.
- Official Home Page
- The Hauptvermutung book (including Casson's 1967 Trinity College fellowship dissertation)
- Proceedings of the Casson Fest (Arkansas and Texas 2003) A conference to celebrate Casson's 60th birthday, with biographical information.
- Photos from conference, including the `honorary degree' presented to Casson by the participants
- Andrew Casson at the Mathematics Genealogy Project
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