John Charles Butcher ONZM is a New Zealand mathematician who specialises in numerical methods for the solution of ordinary differential equations.
Butcher works on multistage methods for initial value problems, such as Runge-Kutta and general... Wikipedia
Born: 1933 (age 91 years), New Zealand
Notable student: Nicolette Rattenbury
Awards: SIAM Fellow, Hector Medal, and Van Wijngaarden Award