Nikolay Lobachevsky

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First years of life The first years of life N.And.20.10.1792 Lobachevsky was born in Nizhny Novgorod in the family of official-surveyor I. Lobachevsky and his wife P. A. lobachevskaya . Soon the family moved to Kazan. The father of the family died at the age of 40, leaving a widow with three young sons Alexander, Nicholas and Alexei, in distress. The annual celebration of the birth of N. And.Lobachevsky

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Years of study Years of study in 1802. Praskovia Alexandrovna gave all her sons to the gymnasium. 14.02.1807 Nikolai Lobachevsky was enrolled in Kazan University. A great influence on the choice of the further way Lobachevsky had a visiting Professor of pure mathematics Martin Bartels, friend and teacher of the great mathematician Carl Friedrich Gauss. Martin Bartels

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Beginning of teaching Beginning of teaching since 1812. N.And.Lobachevsky teaches courses in arithmetic and geometry for preparing for the exam "on the rank", and since 1814. leads a serious University teaching. Kazan University

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at the University In 1819. he received the post of Dean of the faculty of physics and mathematics. In 1824. on the recommendation of f Gauss N. And Lobachevsky was elected a corresponding member of the göttingen Royal scientific society.

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The essence of Lobachevsky geometry This is a deductive theory proceeding from the same concepts and axioms as Euclidean geometry, with the only fundamental exception − the V postulate is replaced by Lobachevsky's axiom: "to a given line through a given point that does not lie on a straight line, at least two parallel lines can be drawn." At the same time, there are no contradictions in the theory, all the evidence is impeccable.

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last years of life In the last years of his life Nikolai Ivanovich went blind and his last work " Pangeometry " had to dictate to his students. He died on 12.02.1856 at the age of 63 from lung paralysis.

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