Ákos Császár
Ákos Császár (born February 26, 1924 in Budapest ; † December 14, 2017 there ) was a Hungarian mathematician who dealt with topology and real analysis . He was a professor at the Loránd Eötvös University .
After graduating from high school in 1942, Császár attended a teachers' academy (Peter Pazmany) graduating in 1947 and then the Technical University of Budapest. At the end of the Second World War, after the siege of Budapest by the Red Army, he was interned with his father and brother, and he was the only one of the three to survive. He was a student of Leopold Fejér . After graduation, he was given a teaching position, but he soon went back to the university to the analysis department of Loránd Eötvös University, where he received his doctorate in 1952 (candidate title) and habilitation in 1954 (doctorate in the Russian system). In 1957 he became a full professor and headed the analysis department with one interruption from 1983 to 1986 to 1992. In 1996 he became professor emeritus.
In 1949 he constructed a non-convex polyhedron named after him without diagonals ( Császár polyhedron ). He introduced syntopogenic spaces as generalized topological spaces.
From 1966 to 1980 he was Secretary General and from 1980 to 1990 President of the Bolyai János Matematikai Társulat (Hungarian Mathematical Society) and then its Honorary President. He was a corresponding member (1970) and since 1989 a full member of the Hungarian Academy of Sciences. From 1973 to 1976 and 1990 to 1999 he headed the Mathematics and Physics section there. In 1963 he received the Kossuth Prize and in 2009 the gold medal of the Hungarian Academy of Sciences. In 1981 he received the Bolzano Medal of the Czechoslovak Academy of Sciences. In 2004 he received an honorary doctorate from Eötvös University. In 1997 he became a member of the Central European Academy of Sciences.
His uncle Elemér Császár (1874–1940) was a literary historian.
His wife Klara was also a mathematician.
Fonts
- Foundations of General Topology, Pergamon Press 1963
- General Topology, Adam Hilger 1978
Web links
- Hungarian biography
- Photo 1980 with Vera Sos in the Halmos photo collection
- Ákos Császár in the Mathematics Genealogy Project (English)
Individual evidence
- ↑ Csaszar A polyhedron without diagonals , Acta Sci. Math. Szeged, 13, 1949, 140-142
- ↑ Mathworld, Csaszar polyhedron
| personal data | |
|---|---|
| SURNAME | Császár, Ákos |
| BRIEF DESCRIPTION | Hungarian mathematician |
| DATE OF BIRTH | February 26, 1924 |
| PLACE OF BIRTH | Budapest |
| DATE OF DEATH | December 14, 2017 |
| Place of death | Budapest |