Franciszek Leja (27 January 1885 in Grodzisko Górne near Leżajsk – 11 October 1979 in Kraków, Poland) was a Polish mathematician. He was born to a poor peasant family in the southeastern Poland. After graduating from the University of Lwów he was a teacher of mathematics and physics in high schools from 1910 until 1923, among others in Kraków. From 1924 until 1936 he was a professor at the Warsaw University of Technology and Warsaw University, from 1936 until 1960 in the Jagiellonian University.
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| - Franciszek Leja (de)
- Franciszek Leja (fr)
- Franciszek Leja (en)
- Franciszek Leja (pl)
- Franciszek Leja (pt)
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| - Franciszek Leja (geboren 27. Januar 1885 in , Österreich-Ungarn; gestorben 11. Oktober 1979 in Krakau) war ein polnischer Mathematiker der Krakauer Mathematikerschule. Sein Interesse galt hauptsächlich analytischen Funktionen. (de)
- Franciszek Leja (27 janvier 1885, Grodzisko Górne, Autriche-Hongrie – 11 octobre 1979, Cracovie, Pologne) est un mathématicien polonais. (fr)
- Franciszek Leja (ur. 27 stycznia 1885 w Grodzisku Górnym, zm. 11 października 1979 w Krakowie) – polski matematyk, jeden z czołowych przedstawicieli krakowskiej szkoły matematycznej. (pl)
- Franciszek Leja foi um matemático polonês. Seu campo de interesse foi principalmente funções analíticas. Foi membro da Escola de Matemática da Cracóvia. (pt)
- Franciszek Leja (27 January 1885 in Grodzisko Górne near Leżajsk – 11 October 1979 in Kraków, Poland) was a Polish mathematician. He was born to a poor peasant family in the southeastern Poland. After graduating from the University of Lwów he was a teacher of mathematics and physics in high schools from 1910 until 1923, among others in Kraków. From 1924 until 1936 he was a professor at the Warsaw University of Technology and Warsaw University, from 1936 until 1960 in the Jagiellonian University. (en)
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| - Franciszek Leja (geboren 27. Januar 1885 in , Österreich-Ungarn; gestorben 11. Oktober 1979 in Krakau) war ein polnischer Mathematiker der Krakauer Mathematikerschule. Sein Interesse galt hauptsächlich analytischen Funktionen. (de)
- Franciszek Leja (27 January 1885 in Grodzisko Górne near Leżajsk – 11 October 1979 in Kraków, Poland) was a Polish mathematician. He was born to a poor peasant family in the southeastern Poland. After graduating from the University of Lwów he was a teacher of mathematics and physics in high schools from 1910 until 1923, among others in Kraków. From 1924 until 1936 he was a professor at the Warsaw University of Technology and Warsaw University, from 1936 until 1960 in the Jagiellonian University. He was captured by German Nazi during Sonderaktion Krakau and sent with 183 Polish professors of the Jagiellonian University and University of Technology to Sachsenhausen concentration camp. After international protest by prominent Italians including Benito Mussolini and the Vatican, 101 professors who were older than 40 were released from Sachsenhausen on February 8, 1940. Unfortunately Leja, older than 40, was not in the group of released prisoners. He stayed in a concentration camp until May 1940 when he returned to Kraków. In Kraków bad news were waiting for him: the university was closed, Leja's apartment was taken over by Nazi. The homeless couple with no income decided to move to Grodzisko Górne where they have a small house and garden. They got a permission from Gestapo and left Kraków. In Grodzisko Leja wrote the book on the calculus Rachunek różniczkowy i całkowy ze wstępem do równań różniczkowych. Since 1948 he worked for the Institute of Mathematics of the Polish Academy of Sciences. He was a co-founder of the Polish Mathematics Society in 1919 and from 1963 until 1965 the President. Since 1931, he was a member of the Warsaw Science Society (TNW). His main scientific interests concentrated on analytic functions, in particular the method of extremal points and transfinite diameters. He was also interested in topology; he introduced the definition of topological group (en)
- Franciszek Leja (27 janvier 1885, Grodzisko Górne, Autriche-Hongrie – 11 octobre 1979, Cracovie, Pologne) est un mathématicien polonais. (fr)
- Franciszek Leja (ur. 27 stycznia 1885 w Grodzisku Górnym, zm. 11 października 1979 w Krakowie) – polski matematyk, jeden z czołowych przedstawicieli krakowskiej szkoły matematycznej. (pl)
- Franciszek Leja foi um matemático polonês. Seu campo de interesse foi principalmente funções analíticas. Foi membro da Escola de Matemática da Cracóvia. (pt)
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