Labachevski biography wife
Nikolai Ivanovich Lobachevsky was a Russian mathematician and geometer, known primarily for his work on hyperbolic geometry, otherwise known as Lobachevskian geometry, and also for his fundamental study on Dirichlet integrals, known as the Lobachevsky integral formula.
Labachevski biography
The story of how Lobachevsky's hyperbolic geometry came to be accepted is a complex one and this biography is not the place in which to go into details, but we shall note .
Labachevski biography wikipedia
The Russian mathematician Nikolai Ivanovich Lobachevskii () was one of the first to found an internally consistent system of non-Euclidean geometry.
Labachevski biography book
Nikolai Ivanovich Lobachevsky (November 20 (December 1) , Nizhny Novgorod - February 12 (24), , Kazan), a great Russian mathematician, creator of Lobachevsky geometry, a .