Czesław Ryll-Nardzewski

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Czesław Ryll-Nardzewski
Born (1926-10-07)7 October 1926
Wilno, Commonwealth of Poland
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Wrocław, Poland
Nationality Poland
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 Polishmathematician.

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.[citation needed]

He became a member of the Polish Academy of Sciences in 1967. He died in 2015 at the age of 88.[1]

References


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