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Nikolai Lobachevsky
From OeisWiki
Nikolai Ivanovich Lobachevsky (Russian: Никола́й Ива́нович Лобаче́вский) (1792–1856) was a Russian mathematician and geometer, renowned primarily for his pioneering works on hyperbolic geometry, otherwise known as Lobachevskian geometry.
External links
- O’Connor, John J.; Robertson, Edmund F., “Nikolai Lobachevsky”, MacTutor History of Mathematics archive, University of St Andrews.