Czesław Ryll-Nardzewski
| Czesław Ryll-Nardzewski | |
|---|---|
| Born |
7 October 1926 Wilno, Commonwealth of Poland |
| Died |
18 September 2015 (aged 88) Wrocław, Poland |
| Nationality | Polish |
| Fields | Mathematics |
| Institutions |
Wrocław University of Technology Warsaw University |
| Doctoral advisor | Mieczysław Biernacki |
| Doctoral students |
Anzelm Iwanik Kazimierz Musiał Leszek Pacholski Rastislav Telgarsky |
Czesław Ryll-Nardzewski (Polish: [ˈt͡ʂɛswav ˈrɨl narˈd͡zɛfskʲi]; 7 October 1926 – 18 September 2015) was a Polish mathematician.
Born in Wilno, Commonwealth of Poland, he was a student of Hugo Steinhaus. At the age of 26 he became professor at the Warsaw University. In 1959, he became a professor at the Wrocław University of Technology. His main research areas are measure theory, functional analysis, foundations of mathematics and probability theory. Several theorems bear his name: the Ryll-Nardzewski fixed point theorem, the Ryll-Nardzewski theorem in model theory, and the Kuratowski and Ryll-Nardzewski measurable selection theorem.
He became a member of the Polish Academy of Sciences in 1967. He died in 2015 at the age of 88.
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