Karl Stein (1 January 1913 in Hamm, Westphalia – 19 October 2000) was a German mathematician. He is well known for complex analysis and cryptography. Stein manifolds and Stein factorization are named after him.
Karl Stein | |
|---|---|
 Karl Stein in Eichstätt, 1968 | |
| Born | Frank Reginald Nunes Nabarro 1 January 1913 |
| Died | 19 October 2000 (aged 87) |
| Alma mater | University of Münster |
| Known for | Stein manifold Stein factorization Behnke–Stein theorem Behnke–Stein theorem on Stein manifolds Remmert–Stein theorem |
| Awards | Cantor Medal (1990) |
| Scientific career | |
| Fields | Complex analysis Cryptography |
| Institutions | Ludwig Maximilian University of Munich |
| Academic advisors | Heinrich Behnke |
| Doctoral students | Otto Forster Gunther Schmidt Martin Schottenloher |
Career
editKarl Stein received his doctorate with his dissertation on the topic Zur Theorie der Funktionen mehrerer komplexer Veränderlichen; Die Regularitätshüllen niederdimensionaler Mannigfaltigkeiten at the University of Münster under the supervision of Heinrich Behnke in 1937. Karl Stein was conscripted into the Wehrmacht sometime before 1942, and trained as a cryptographer to work at OKW/Chi, the Cipher Department of the High Command of the Wehrmacht. He was assigned to manage the OKW/Chi IV, Subsection a, which was a unit responsible for security of own processes, cipher devices testing, and invention of new cipher devices. He managed a staff of 11[1] In 1955, he became professor at the Ludwig Maximilian University of Munich and emeritated in 1981. In 1990, he received the first Cantor medal.[2]
Students
editStein's doctoral students included Michael Schneider, Otto Forster, Ivo Schneider, Gunther Schmidt and Martin Schottenloher.
References
edit- ^ Christof Teuscher (2004), Alan Turing: Life and Legacy of a Great Thinker, Springer Science & Business Media, p. 464, ISBN 978-3-540-20020-8
- ^ "The Georg Cantor Medal of the Deutsche Mathematiker-Vereinigung", MacTutor History of Mathematics Archive, University of St Andrews, retrieved 1 April 2024
- Huckleberry, Alan (2008), "Karl Stein (1913–2000)", Jahresbericht der Deutschen Mathematiker-Vereinigung, 110 (4): 195–206, arXiv:1003.6025, Bibcode:2010arXiv1003.6025H, ISSN 0012-0456, MR 2479879
- Karl Stein at the Mathematics Genealogy Project