Deutsche Mathematiker-Vereinigung
He was awarded the Brouwer Medal in 1987, the first Nemmers Prize in Mathematics in 1994, the Schock Prize of the Royal Swedish Academy of Sciences in 1999, the Cantor Medal of the German Mathematical Society in 2002, the King Faisal International Prize in 2002 and the Bolyai Prize of the Hungarian Academy of Sciences in 2010.