Werner Fenchel
| Moritz Werner Fenchel | |
|---|---|
Werner Fenchel, 1972
|
|
| Born |
3 May 1905 Berlin, Germany |
| Died | 24 January 1988 (aged 82) Copenhagen, Denmark |
| Residence | Germany, Denmark, USA |
| Citizenship | German |
| Fields |
Mathematics: Geometry Optimization |
| Institutions |
University of Copenhagen University of Göttingen |
| Alma mater | University of Berlin |
| Doctoral advisor | Ludwig Bieberbach |
| Doctoral students |
Birgit Grodal Peter Scherk Troels Jørgensen |
| Known for |
Alexandrov–Fenchel inequality Legendre–Fenchel transformation Fenchel's duality theorem |
| Influenced |
Victor Klee R. Tyrrell Rockafellar |
| Notable awards |
Rockefeller Fellowship (1930) Membership in the Royal Danish Academy of Sciences and Letters (1946) |
Moritz Werner Fenchel (German: [ˈfɛnçəl]; 3 May 1905 – 24 January 1988) was a mathematician known for his contributions to geometry and to optimization theory. Fenchel established the basic results of convex analysis and nonlinear optimization theory which would, in time, serve as the foundation for nonlinear programming. A German-born Jew and early refugee from Nazi suppression of intellectuals, Fenchel lived most of his life in Denmark. Fenchel's monographs and lecture notes are considered influential.
Fenchel was born on 3 May 1905 in Berlin, Germany, his younger brother was the Israeli architect Heinz Fenchel.
Fenchel studied mathematics and physics at the University of Berlin between 1923 and 1928. He wrote his doctorate thesis in geometry (Über Krümmung und Windung geschlossener Raumkurven) under Ludwig Bieberbach.
From 1928 to 1933, Fenchel was Professor E. Landau's Assistant at the University of Göttingen. During a one-year leave (on Rockefeller Fellowship) between 1930 and 1931, Fenchel spent time in Rome with Levi-Civita, as well as in Copenhagen with Harald Bohr and Tommy Bonnesen. He visited Denmark again in 1932.
Fenchel taught at Göttingen until 1933, when the Nazi discrimination laws led to mass-firings of Jews.
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