Geodesic
Geometric ideas of N.~Lobachevsky (for his 225-th anniversary)
Matematičeskoe obrazovanie, Tome 81 (2017) no. 1, pp. 48-51.

Voir la notice de l'article provenant de la source Math-Net.Ru

A short biography of the great Russian geometer Nikolay Lobachevsky and a description of his geometric ideas.
Keywords: Nikolai Ivanovich Lobachevsky, non-Euclidean geometry, hyperbolic geometry. 
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S. V. Zharov. Geometric ideas of N.~Lobachevsky (for his 225-th anniversary). Matematičeskoe obrazovanie, Tome 81 (2017) no. 1, pp. 48-51. http://geodesic.mathdoc.fr/item/MO_2017_81_1_a6/

[1] Kagan V.F., Osnovaniya geometrii, v. 1, GITTL, M.–L., 1949, 492 pp.

[2] Kagan V.F., Osnovaniya geometrii, v. 2, GITTL, M., 1956, 344 pp.

[3] Lobachevskii N.I., Polnoe sobranie sochinenii, v. 1, Sochineniya po geometrii, GITTL, M., 1946, 416 pp.

[4] Lobachevskii N.I., Izbrannye trudy po geometrii, Izd-vo AN SSSR, M., 1956, 596 pp.

[5] Lobachevskii N.I., Tri sochineniya, GITTL, M., 1956, 416 pp.