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Polish mathematician
Leon Jeśmanowicz (* 1. January 1914; † 1. January 1989) was a polish mathematician. He was 75 years old. He studied at Maria Curie-Skłodowska University. He worked at Vilnius University. His awards include Medal of the 40th Anniversary of People's Poland, Medal of the National Education Commission and Nagroda im. Hugona Steinhausa.