Nikolai Lobachevsky

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, http://www-history.mcs.st-andrews.ac.uk/Biographies/Lobachevsky.html .