Nikolai Sergeyevich Koschlyakov

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Nikolai Sergeyevich Koshlyakov ( Russian Николай Сергеевич Кошляков * July 11 . Jul / 23. July  1891 greg. In St. Petersburg ; † 23. September 1958 in Moscow ) was a Russian mathematician and university professor .

Life

Koschljakow, son of a senior postal worker, learned differential and integral calculus independently while attending high school . He then studied at the physics and mathematics faculty of the Imperial University of St. Petersburg , graduating in 1914. During his studies he was particularly interested in analytical number theory and the work of Georgi Feodosjewitsch Voronoi . After passing the master’s exams at the University of St. Petersburg, he received a position as a private lecturer at the University of Perm , which he held until 1919. In the Russian Civil War he went to Simferopol and taught at the Tauride University . He became a lecturer and in 1922 a professor .

In 1929 Koschljakow returned to the University of Leningrad and headed the chair of general mathematics . To this end, from 1926 on, he headed the Chair of Higher Mathematics at the Leningrad Electrical Engineering Institute. 1933-1936 he also worked in the mathematical department of the Leningrad Institute of Physics and Mathematics of the Academy of Sciences of the USSR (AN-SSSR), which in 1934 became the Steklov Institute of Mathematics . In 1933 he was elected a corresponding member of the AN-SSSR. In 1936 he was accepted into the London Mathematical Society at the suggestion of Godfrey Harold Hardys .

In addition to analysis, he also published on analytical number theory and mechanics.

During the Leningrad blockade , Kozhlakov was arrested at the end of 1941, as were many other Leningrad scientists and university professors. They were accused of forming an anti-Soviet organization in July and August 1941 ( Case 555: Union of Old Russian Intelligence ). On January 13, 1942, the military tribunal of the Leningrad Front sentenced him to death by shooting. The Presidium of the Supreme Soviet changed the sentence to 10 years in a camp. Kozhlyakov's wife was evacuated with their two sons to Novosibirsk Oblast in the summer of 1942 . In the camp, Koschlyakov was released from work for health reasons. His eldest son Mikhail Nikolayevich Koschlyakov was able to send him copies of his last publications and the second volume of the textbook A Course of modern analysis by Edmund Taylor Whittaker and George Neville Watson when the postal connection became possible in 1943 , so that Koschlyakov could continue to do mathematics during his detention in the camp could work. He was writing on a sheet of plywood, which he regularly cleaned with a piece of glass. His work on a class of transcendent functions determined by the generalized Riemann differential equation was examined in the Steklov Institute without the name of the author and was only published in 1949 under the pseudonym NS Sergejew.

Koshlyakov's published work was highly valued by Ivan Matwejewitsch Vinogradow , Sergei Natanowitsch Bernstein and Yuri Vladimirovich Linnik , who stood up for him. In 1944 Koschlyakov was relocated to Moscow, where he worked in the theoretical department of the SB-1 design office, which later became the NPO Almas . In 1951 he was freed six months before the end of his prison term and was fully rehabilitated. He continued to work there as a laboratory manager. In 1953 he received the Stalin Prize and the Order of Lenin . In 1955 he was retired. He remained a scientific advisor to the company and a member of the Scientific Council.

Koschlyakov died of intracerebral hemorrhage and was buried in the Novodevichy Cemetery.

Web links

Individual evidence

  1. ↑ a b c d e Steklow Institute for Mathematics: Кошляков Николай Сергеевич (accessed October 4, 2018).
  2. ↑ Great Soviet Encyclopedia : Кошляков Николай Сергеевич.
  3. ↑ Nikolai Nikolajewitsch Bogoljubow et al .: Кошляков Н. С. (к столетию со дня рождения) . In: Успехи математических наук . tape 45 , no. 4 , 1990.
  4. ↑ Russian Academy of Sciences: Кошляков Николай Сергеевич (accessed October 4, 2018).
  5. ↑ Sank-Peterburg Enziklopedija: ДЕЛО № 555 (дело "Союза старой русской интеллигенции") (accessed October 4, 2018).
  6. ↑ Генеральный алфавитный каталог книг на русском языке (1725–1998) (accessed October 4, 2018).
  7. ↑ ZbMATH : Koshlyakov, Nikolaĭ Sergeevich (accessed October 4, 2018).
  8. ↑ Koschlyakov's grave (accessed October 4, 2018).
personal data
SURNAME Koschljakow, Nikolai Sergejewitsch
ALTERNATIVE NAMES Кошляков, Николай Сергеевич (Russian)
BRIEF DESCRIPTION Russian mathematician and university professor
DATE OF BIRTH July 23, 1891
PLACE OF BIRTH St. Petersburg
DATE OF DEATH September 23, 1958
Place of death Moscow