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      • The Russian mathematician Nikolai Ivanovich Lobachevskii (1792-1856) was one of the first to found an internally consistent system of non-Euclidean geometry. His revolutionary ideas had profound implications for theoretical physics, especially the theory of relativity.
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  2. Nikolai Ivanovich Lobachevsky (Russian: Никола́й Ива́нович Лобаче́вский, IPA: [nʲikɐˈlaj ɪˈvanəvʲɪtɕ ləbɐˈtɕɛfskʲɪj] ⓘ; 1 December [ O.S. 20 November] 1792 – 24 February [ O.S. 12 February] 1856) was a Russian mathematician and geometer, known primarily for his work on hyperbolic geometry, otherwise known as Lobachevskian geometry, and also for ...

  3. Nikolay Ivanovich Lobachevsky (born Dec. 1 [Nov. 20, Old Style], 1792, Nizhny Novgorod, Russia—died Feb. 24 [Feb. 12, Old Style], 1856, Kazan) was a Russian mathematician and founder of non-Euclidean geometry, which he developed independently of János Bolyai and Carl Gauss.

  4. Dec 1, 2011 · Quick Info. Born. 1 December 1792. Nizhny Novgorod (was Gorky from 1932-1990), Russia. Died. 24 February 1856. Kazan, Russia. Summary. Nikolai Lobachevsky published his work on non-Euclidean geometry, the first account of the subject to appear in print. View seven larger pictures. Biography.

  5. Nikolai Ivanovich Yezhov (Russian: Николай Иванович Ежов, IPA: [nʲɪkɐˈɫaj ɪˈvanəvʲɪt͡ɕ (j)ɪˈʐof]; 1 May 1895 – 4 February 1940) was a Soviet secret police official under Joseph Stalin who was head of the NKVD from 1936 to 1938, during the height of the Great Purge.

  6. May 17, 2018 · The Russian mathematician Nikolai Ivanovich Lobachevskii (1792-1856) was one of the first to found an internally consistent system of non-Euclidean geometry. His revolutionary ideas had profound implications for theoretical physics, especially the theory of relativity.

  7. Nikolay Lobachevsky, (born, Dec. 1, 1792, Nizhny Novgorod, Russia—died Feb. 24, 1856, Kazan), Russian mathematician. His entire life centred around the University of Kazan, where he studied and later (from 1816) taught.

  8. T he Russian mathematician Nikolai Lobachevsky, along with the Hungarian Janos Bolyai (1802-1860), is considered to be the founder of non-Euclidean geometry.

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