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Created page with "== Introduction == Riemannian curvature is a mathematical concept that originates from the field of differential geometry. It is a measure of the amount by which the geometry of a given space deviates from that of Euclidean space. The concept is named after the German mathematician Bernhard Riemann, who made significant contributions to this area of study. Image:Detail-73861.jpg|thumb|center|A close-u..."