Born 1951 in Heidelberg. Degrees in mathematics und physics at MIT (1968), D.Phil. Oxford Univ. (1972), German Habilitation Bonn Univ. (1975), Associate Professor Bonn Univ. (1976), Chair Professor of Number Theory Univ. of Maryland (1979-1990), Professor Univ. of Utrecht (1990), Professeur, Collège de France, Paris (since 2000). Director, Max Planck Institute for Mathematics 1995-2019. Emeritus since 2019. Scientific Member of the Max Planck Society since 1984.