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This is a picture about the creator of non-Euclidean or hyperbolic geometry, the Russian mathematician Nikolai Lobachevsky, and his scientific discoveries. The scientist is widely known for showing that Euclid's fifth postulate about parallel lines may not be respected. Nikolai Lobachevsky was also a successful rector of Kazan University. A living portrait of a mathematician who lived in the XIX century appears in the form of observations of experts from Berlin, Göttingen and Kazan, demonstrating the impact of his discoveries on modern science.