Mathwar/Personlist/Hopf Heinz
Heinz Hopf
(* November 19th 1894 in Gräbschen, † June 3rd 1971 in Zollikon)
Life
In October 1928 Hopf married Anja von Mickwitz (1891 - 1967). The next year he declined a job offer from Princeton. In 1931 Hopf took Hermann Weyl's position at ETH, in Zürich.
Hopf received another invitation to Princeton in 1940, but he declined it. Two years later, however, he was forced to file for Swiss citizenship after his property was confiscated by Nazi authorities.
In 1946/47 and 1955/56 Hopf visited the United States, staying at Princeton and giving lectures at New York University and Stanford University. He served as president of the International Mathematical Union from 1955 to 1958. He received honorary doctorates from Princeton, Freiburg i. Br., Manchester, Sorbonne at Paris, Brussels, and Lausanne.