Nikolai Yevgrafovich Kochin

Nikolai Yevgrafovich Kotschin ( Russian: Николай Евграфович Кочин , English transcription Nikolai Yevgrafovich Kochin ; born May 19, 1901 in Saint Petersburg , † December 31, 1944 in Moscow ) was a Russian mathematician.

Life

Kochin studied at the University of Petrograd with a degree in 1923. From 1924 he was a lecturer there and was from 1934 at the Lomonosov University in Moscow. In addition, he was at the Institute for Mechanics of the Soviet Academy of Sciences from 1939 to 1944 . During the Second World War he stayed in Moscow, where he did research for the military. His wife and two daughters were evacuated to Kazan but returned in 1944. In the same year Kochin died after illness. His wife continued his lectures.

Kotschin dealt mainly with theoretical hydrodynamics , meteorology , gas dynamics and the theory of shock waves . Among other things, he developed a theory of water waves of small amplitude, investigated the rolling motion of ships and the aerodynamics of hydrofoils.

Since 1925 he was married to his fellow student Pelageja Jakowlewna Polubarinowa-Kotschina , who, like himself, became a well-known mathematician specializing in hydrodynamics. She also wrote his biography and edited his works.

Kochin was also at the University of Göttingen in 1928 , where he met George Gamow , whom he helped with his calculations on the tunnel effect in the alpha decay of atomic nuclei.

Fonts

• NE Kochin, IA Kibel, NV Roze: Theoretical hydromechanics , Interscience, New York 1964 (German edition: Theoretische Hydromechanik, Akademie Verlag, Berlin).

Web links

• John J. O'Connor, Edmund F. Robertson :  Nikolai Jewgrafowitsch Kotschin. In: MacTutor History of Mathematics archive .

Individual evidence

1. ↑ Oral History Interview by George Gamow . Gamow thanked him in his famous work on the tunnel effect (Zeitschrift für Physik, Volume 51, 1928, p. 211).