Czesław Ryll-Nardzewski

Czesław Ryll-Nardzewski
Born(1926-10-07)7 October 1926
Died 18 September 2015(2015-09-18) (aged 88)
Wrocław, Poland
NationalityPolish
Known forRyll-Nardzewski fixed point theorem
Ryll-Nardzewski theorem
Kuratowski and Ryll-Nardzewski measurable selection theorem
Scientific career
FieldsMathematics
InstitutionsWrocław University of Technology
Warsaw University
Doctoral advisorMieczysław Biernacki

Czesław Ryll-Nardzewski (Polish: [ˈt͡ʂɛswaf ˈrɨl narˈd͡zɛfskʲi]; 7 October 1926 – 18 September 2015) was a Polish mathematician.