Sergei Bernstein
Soviet mathematician / From Wikipedia, the free encyclopedia
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Sergei Natanovich Bernstein (Ukrainian: Сергі́й Ната́нович Бернште́йн, sometimes Romanized as Bernshtein; 5 March 1880 – 26 October 1968) was a Ukrainian and Russian mathematician of Jewish origin known for contributions to partial differential equations, differential geometry, probability theory, and approximation theory.[1][2]
Sergei Bernstein | |
---|---|
Born | Sergei Natanovich Bernstein (1880-03-05)5 March 1880 |
Died | 26 October 1968(1968-10-26) (aged 88) |
Nationality | Soviet |
Alma mater | University of Paris |
Known for | Bernstein's inequality in analysis Bernstein inequalities in probability theory Bernstein polynomial Bernstein's theorem (approximation theory) Bernstein's theorem on monotone functions Bernstein problem in mathematical genetics |
Scientific career | |
Fields | Mathematics |
Institutions | University of Paris University of Göttingen University of Kharkiv Leningrad University Steklov Institute of Mathematics |
Doctoral advisor | Charles Émile Picard David Hilbert |
Doctoral students | Yakov Geronimus Sergey Stechkin |
Bernstein was born into a Jewish family living in Odessa. Sergei was brought up in Odessa but his father died on 4 February 1891 just before he was eleven years old. He graduated from high school in 1898. After this, following his mother's wishes, he went with his elder sister to Paris. Bernstein's sister studied biology in Paris and did not return to the Ukraine but worked at the Pasteur Institute. After one year studying mathematics at the Sorbonne, Bernstein decided that he would rather become an engineer and entered the École supérieure d'électricité. However, he continued to be interested in mathematics and spent three terms at the University of Göttingen, beginning in the autumn of 1902, where his studies were supervised by David Hilbert. Bernstein returned to Paris and submitted his doctoral dissertation "Sur la nature analytique des solutions des équations aux dérivées partielles du second ordre" to the Sorbonne in the spring of 1904.[3] He returned to Russia in 1905 and taught at Kharkiv University from 1908 to 1933. He was made an ordinary professor in 1920. Bernstein later worked at the Mathematical Institute of the USSR Academy of Sciences in Leningrad, and also taught at the University and Polytechnic Institute. From January 1939, Bernstein also worked also at Moscow University. He and his wife were evacuated to Borovoe, Kazakhstan in 1941. From 1943 he worked at the Mathematical Institute in Moscow, and edited Chebyshev’s complete works. In 1947 he was dismissed from the University and became Head of the Department of Constructive Function Theory at the Steklov Institute. He died in Moscow in 1968.