His main interest was topology. He studied on the Warsaw University together with Zygmunt Janiszewski,Mazurkiewicz, Sierpinski, Kuratowski, Saks. He wrote works on cut points in connected sets, on conformal mappings, on complex functions and number theory, triangular numbers.
During World War II took part in illegal teaching, forbidden by German authorities and eventually was sent to a concentration camp. He successfully survived and became the teacher on Warsaw Technical University.
He visited universities in Tomsk, Harvard, London, Vienna. He served as president of the Warsaw section of the Polish Mathematical Society and the International Astronautical Federation.
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