Helmut Hasse
| Helmut Hasse | |
|---|---|
 |
|
| Born |
25 August 1898 Kassel, Hesse-Nassau, Prussia |
| Died | 26 December 1979 (aged 81) Ahrensburg, Schleswig-Holstein, West Germany |
| Nationality | German |
| Fields | Mathematics |
| Alma mater |
University of Marburg University of Göttingen |
| Thesis | Über die Darstellbarkeit von Zahlen durch quadratische Formen im Körper der rationalen Zahlen (1922) |
| Doctoral advisor | Kurt Hensel |
| Doctoral students |
Cahit Arf Wolfgang Franz Paul Lorenzen Curt Meyer Günter Pickert Hans Reichardt Peter Roquette Otto Schilling Oswald Teichmüller |
| Other notable students | Paul Lorenzen |
| Known for | Conductor-discriminant formula |
Helmut Hasse (German: [ˈhasə]; 25 August 1898 – 26 December 1979) was a German mathematician working in algebraic number theory, known for fundamental contributions to class field theory, the application of p-adic numbers to local class field theory and diophantine geometry (Hasse principle), and to local zeta functions.
Hasse was born in Kassel, and died in Ahrensburg.
After serving in the navy in World War I, he studied at the University of Göttingen, and then at Marburg under Kurt Hensel, writing a dissertation in 1921 containing the Hasse–Minkowski theorem, as it is now called, on quadratic forms over number fields. He then held positions at Kiel, Halle and Marburg. He was Hermann Weyl's replacement at Göttingen in 1934.
In 1933 Hasse had signed the .
Politically, he was a right-wing nationalist and applied for membership in the Nazi Party in 1937, but this was denied to him due to his Jewish ancestry. After the war, he briefly returned to Göttingen in 1945, but was excluded by the British authorities. After brief appointments in Berlin, from 1948 on he settled permanently as professor in Hamburg.
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