Czesław Ryll-Nardzewski

Czesław Ryll - Nardzewski ( born October 7, 1926 in Vilnius) is a Polish mathematician.

Czesław Ryll - Nardzewski reached his baccalaureate degree in occupied Germany in Vilnius secret school courses. After the war he studied mathematics and physics at the Maria Curie - Skłodowska University in Lublin, where he graduated in 1948. He then moved to the University of Breslau, where he qualified in 1951 and 1954 was first appointed in 1964 as an associate and then full professor. From 1979 until his retirement in 1996 he taught at the Technical University of Wroclaw.

Ryll - Nardzewski is a member of the Polish Academy of Sciences since 1967. He is the editor of the journal Probability and Mathematical Statistics, as well as co-editor of the Bulletin of the Polish Academy of Sciences, Colloquium Mathematicum, Fundamenta Mathematicae and Studia Mathematica.

1992 Ryll - Nardzewski was awarded the Stefan Banach Medal.

Ryll - Nardzewskis research areas are functional analysis, foundations of mathematics, probability theory and measure theory. A major contribution to fundamental research is the set of Ryll - Nardzewski, after which no finite axiomatization of Peano arithmetic is possible. His theorem on the characterization - categorical theories is also called set of Ryll - Nardzewski. The fixed point theorem of Ryll - Nardzewski from functional analysis also bears his name.