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Lobachevsky, Nikolay Ivanovich



Mathematician, born in Nizhni Novgorod, Russia. He became professor at Kazan in 1816, where he spent the rest of his life. In the 1820s he developed a theory of non-Euclidean geometry in which Euclid's parallel postulate did not hold. A similar theory was discovered almost simultaneously and independently by Jénos Bolyai.

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AND Reference Data Ltd.,Oxford, UK.

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