John Conway is a versatile mathematician who combines a deep combinatorial insight with algebraic virtuosity, particularly in the construction and manipulation of ‘off-beat’ algebraic structures, which illuminate a wide variety of problems in completely unexpected ways. He has made significant contributions to the theory of finite groups, the theory of knots, mathematical logic (both set theory and automata theory) and the theory of games (and also to its practice).
Professor John Conway FRS died on 11 April 2020.