Mark Krasnoselsky

Mark Aleksandrovich Krasnoselsky (; 27 April 1920, Starokostiantyniv – 13 February 1997, Moscow) was a Soviet and Russian mathematician renowned for his work on nonlinear functional analysis and its applications. Biography Early years Mark Krasnoselsky was born in Starokostiantyniv, where his father worked as a construction engineer and his mother taught in an elementary school. In 1932 the Krasnoselsky family moved to Berdiansk and in 1938 Mark entered the physico-mathematical faculty of Kyiv University, which was evacuated at the beginning of World War II to Kazakhstan where it became known as the Joint Ukrainian University. He graduated in 1942, in the middle of the war, served four years in the Soviet Army, became Candidate in Science in 1948, with a dissertation on self-adjoint extensions of operators with nondense domains, before getting the title of Doctor in Science in 1950, with a thesis on investigations in Nonlinear Functional analysis.