Pavel Petrovich Korovkin

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Pawel Petrowitsch Korovkin (in a different transcription Pavel Korovkin , Russian Павел Петрович Коровкин , born July 9, 1913 in Wessjegonsk ; † August 11, 1985 ) was a Russian mathematician .

Korovkin was born into a poor peasant family. He lost his father very early and grew up in a children's home between 1914 and 1920. In 1930 he finished school in Leningrad and, as the winner of a mathematics competition, had the right to study at the Faculty of Mathematics and Mechanics of the Leningrad State University without an entrance examination, which he made use of after a year of work. He studied with VI Smirnow and received his doctorate in 1939 with a thesis on orthogonal polynomials . Then he went to the Pedagogical Institute of the State University of Kalinin .

At the beginning of the Second World War , PP Korowkin volunteered and began a military career.

In December 1945 he continued his work at the Pedagogical Institute of Kalinin, completed his habilitation in 1947 with a thesis on the convergence of polynomial sequences and was appointed professor in 1948. From 1958 to 1970 he headed the Department of Higher Mathematics at the Moscow State Institute of Motor Vehicle Engineering and Road Construction , then he took over the management of the Department of Mathematical Analysis at the Tsiolkovsky State University in Kaluga .

Korowkin's main areas of work were orthogonal polynomials , approximation theory and potential theory . From the beginning of the 1950s he turned to functional analysis and investigated the stability of the outer Dirichlet problem and the convergence behavior of linear positive operators on spaces of continuous functions. The terms Korowkin Theorem and Korowkin Approximation are associated with his name.

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personal data
SURNAME Korovkin, Pavel Petrovich
ALTERNATIVE NAMES Korovkin, Pavel; Коровкин, Павел Петрович (Russian)
BRIEF DESCRIPTION Russian mathematician
DATE OF BIRTH July 9, 1913
PLACE OF BIRTH Vesyegonsk
DATE OF DEATH August 11, 1985