•
SIAM 1988 John von Neumann lecturer. • SIAM 1991
Peter Henrici Prize. •
SIAM Germund Dahlquist Prize, established 1995, "Awarded to a young scientist (normally under 45) for original contributions to fields associated with Germund Dahlquist, especially the numerical solution of differential equations and numerical methods for scientific computing". • Three honorary doctorates, from
Hamburg (1981),
Helsinki (1994), and
Linköping (1996). ==Notes==