Helmut Hasse
| Helmut Hasse | |
|---|---|
 |
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| Born | 25 August 1898 Kassel, Hesse-Nassau, Prussia |
| Died | 26 December 1979 (aged 81) Ahrensburg, Schleswig-Holstein, West Germany |
| Nationality |  Germany |
| Fields | Mathematics |
| Alma mater | University of Marburg University of Göttingen |
| Doctoral advisor | Kurt Hensel |
| Doctoral students | Cahit Arf Paul Lorenzen Curt Meyer Günter Pickert Hans Reichardt Peter Roquette Oswald Teichmüller |
Helmut Hasse (German pronunciation: [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 classfield theory and diophantine geometry (Hasse principle), and to local zeta functions.
[edit] Life
He 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; politically he was a right-wing nationalist, and applied for membership in the Nazi Party in 1937 but this was denied to him because he had Jewish ancestors. After war work he returned to Göttingen briefly in 1945 but was excluded by the British authorities. After brief appointments in Berlin from 1948 he settled permanently as professor in Hamburg.
He collaborated with many mathematicians: in particular with Emmy Noether and Richard Brauer on simple algebras; and with Harold Davenport on Gauss sums (Hasse–Davenport relations) and with Cahit Arf on the Hasse–Arf theorem.
[edit] See also
- Hasse diagram
- Hasse invariant of an elliptic curve
- Hasse invariant of a quadratic form
- Artin–Hasse exponential
- Hasse–Weil L-function
- Hasse norm theorem
- Hasse's algorithm
- Hasse's theorem on elliptic curves
[edit] External links
- 1898 births
- 1979 deaths
- People from Kassel
- People from Hesse-Nassau
- Number theorists
- German mathematicians
- Kyffhäuserverband members
- University of Marburg faculty
- University of Kiel faculty
- University of Halle-Wittenberg faculty
- University of Hamburg faculty
- University of Göttingen faculty
- University of Göttingen alumni
- University of Marburg alumni
- German people of Jewish descent
- German military personnel of World War I
- Kaiserliche Marine personnel
