Nationality Russian Alma mater Lomonosov University Fields Mathematics | Name Dmitri Egorov Doctoral advisor Nikolai Bugaev Role Mathematician | |

Born 22 December 1869
Moscow, Russian Empire (1869-12-22) Citizenship Russian Empire, Soviet Union Institutions Moscow State University Doctoral students Pavel Alexandrov Nikolai Luzin Ivan Petrovsky Ivan Privalov Adolf Yushkevich Dmitrii Menshov Known for works on differential geometry and mathematical analysis, Egorov's Theorem, president of the Moscow Mathematical Society. Died September 10, 1931, Kazan, Russia Notable students Nikolai Luzin, Pavel Alexandrov, Ivan Privalov, Dmitrii Menshov, Ivan Petrovsky Similar People Nikolai Luzin, Pavel Alexandrov, Nikolai Bugaev, Ivan Petrovsky, Jean Gaston Darboux | ||

Education Moscow State University |

**Dmitri Fyodorovich Egorov** (Russian: Дми́трий Фёдорович Его́ров; December 22, 1869 – September 10, 1931) was a Russian and Soviet mathematician known for significant contributions to the areas of differential geometry and mathematical analysis. He was President of the Moscow Mathematical Society (1923 — 1930).

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## Life

Egorov held spiritual beliefs to be of great importance, and openly defended the Church against Marxist supporters after the Russian Revolution. He was elected president of the Moscow Mathematical Society in 1921, and became director of the Institute for Mechanics and Mathematics at Moscow State University in 1923. He also edited the journal *Matematicheskii Sbornik* of the Moscow Mathematical Society. However, because of Egorov's stance against the repression of the Russian Orthodox Church, he was dismissed from the Institute in 1929 and publicly rebuked. In 1930 he was arrested and imprisoned as a "religious sectarian", and soon after was expelled from the Moscow Mathematical Society. Upon imprisonment, Egorov began a hunger strike until he was taken to the prison hospital, and eventually to the house of fellow mathematician Nikolai Chebotaryov where he died.

## Research work

Egorov studied potential surfaces and triply orthogonal systems, and made significant contributions to the broader areas of differential geometry and integral equations. His work influenced that of Jean Gaston Darboux on differential geometry and mathematical analysis. A theorem in real analysis and integration theory, Egorov's Theorem, is named after him.