Andrew Casson
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Andrew John Casson FRS (born 1943) is a British mathematician, an expert on geometric topology and currently the chair of the Department of Mathematics at Yale University in the United States. Casson's work has been in 3 and 4 dimensional topology and has used both geometric and algebraic techniques. Among other discoveries, he introduced the Casson invariant, an important modern invariant for 3-manifolds, and Casson handles, used in Freedman's proof of the 4-dimensional Poincare conjecture. In 1998 he was elected to Fellowship of the Royal Society.
Casson's Ph.D. advisor at the University of Liverpool was C.T.C. Wall, but he never completed his Ph.D. What would have been his Ph.D. thesis became his fellowship dissertation as a research fellow at Trinity College, Cambridge, though he has been the advisor to over 20 doctoral students.
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[edit] External links
- Conference in honor of Casson's 60th birthday, Austin, 2003, with biographical information
- [http://www.maths.ed.ac.uk/~aar/casson/index.html Photos from conference, including
the `honorary degree' presented to Casson by the participants]
