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'''Nikolai I. Lobachevsky''' (1792-1856) was a Russian mathematician.
'''Nikolai I. Lobachevsky''' (1792-1856) was a Russian mathematician.
He was one of the pioneers of [[non-Euclidean geometry]], a system of geometry that rejects traditional Euclidean geometry's fifth postulate that parallel lines can never intersect. He also invented a method for finding the approximations of the roots of algebraic equations.
He developed [[non-Euclidean geometry]] independently of his rival the Hungarian mathematician Janos Bolyai, who developed the same concept at the same time. Non-Euclidean geometry is a system of geometry that rejects traditional Euclidean geometry's fifth postulate that parallel lines can never intersect. He also invented a method for finding the approximations of the roots of algebraic equations.
He is also the subject of a rather amusing song by the comedic musician, [[Tom Lehrer]].
He is also the subject of a rather amusing song by the comedic musician, [[Tom Lehrer]].
[[Category: Mathematicians|Lobachevsky, Nikolai I]]
[[Category: Mathematicians|Lobachevsky, Nikolai I]]