Did Riemann's negation create the hyperbolic geometry? - Answers

Riemann did not negate Euclidean geometry; rather, he expanded the understanding of geometry by introducing the concept of non-Euclidean geometry, which includes both hyperbolic and elliptic geometries. Hyperbolic geometry, characterized by a consistent set of postulates that differ from Euclid's, was developed earlier by mathematicians like Lobachevsky and Bolyai. Riemann's work laid the groundwork for understanding these geometrical systems within a broader context, but the creation of hyperbolic geometry itself was not solely due to his negation.