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Nikolai Lobachevsky

Nikolai Lobachevsky
Nikolai Lobachevsky, Russian mathematician and geometer (d. 1856)

Nikolai Ivanovich Lobachevsky was a Russian mathematician and geometer, known primarily for his work on hyperbolic geometry, otherwise known as Lobachevskian geometry, and also for his fundamental study on Dirichlet integrals, known as the Lobachevsky integral formula.

1 December 1792

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