Convex body
Non-empty convex set in Euclidean space / From Wikipedia, the free encyclopedia
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In mathematics, a convex body in -dimensional Euclidean space is a compact convex set with non-empty interior. Some authors do not require a non-empty interior, merely that the set is non-empty.
A convex body is called symmetric if it is centrally symmetric with respect to the origin; that is to say, a point lies in if and only if its antipode, also lies in Symmetric convex bodies are in a one-to-one correspondence with the unit balls of norms on
Important examples of convex bodies are the Euclidean ball, the hypercube and the cross-polytope.