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Title: Nikolai Ivanovich Lobachevsky. Russian mathematician
Caption: Nikolai Ivanovich Lobachevsky (1792 - 1856); Russian mathematician and geometer, known primarily for his work on hyperbolic geometry, otherwise known as Lobachevskian geometry and also his fundamental study on Dirichlet integrals known as Lobachevsky integral formula.
Credit: Album / World History Archive
Image size: 3675 × 5707 px | 60.0 MB
Print size: 31.1 × 48.3 cm | 1446.9 × 2246.9 in (300 dpi)