Helmut Heinrich Schaefer | |
|---|---|
 Helmut Schaefer in 1989 | |
| Born | February 14, 1925 |
| Died | December 16, 2005 (aged 80) Tübingen, Germany |
| Education | TU Dresden University of Leipzig |
| Known for | Work on topological vector spaces, Schaefer's fixed point theorem |
| Scientific career | |
| Institutions | University of Halle University of Mainz Washington State University University of Michigan University of Tübingen |
| Doctoral advisor | Ernst Hölder |
| Other academic advisors | Gottfried Köthe |
| Doctoral students | Bertram John Walsh |
Helmut Heinrich Schaefer (February 14, 1925 in Großenhain, Weimar Republic – December 16, 2005 in Tübingen, Germany) was a German mathematician, who worked primarily in functional analysis. His two best known scientific monographs are titled Topological Vector Spaces (1966) and Banach Lattices and Positive Operators (1974). The first of these was subsequently translated into Spanish and Russian. The second made him an internationally recognized and leading scholar in this particular field of mathematics. (Roquette & Wolff, 2006)