A little note on DOA Vocabulary 2

Convex Hull: Convex hull in a real vector space V, for a given set X, all the intersection s of the convex sets that contain x are called convex packages of x. In two-dimensional Euclidean space, a convex hull can be imagined as a rubber band that is just wrapped around all points.

Convex set: A convex set is a convex set in the vector space of a real R (or complex C ), if the point on the line of any two point in the set s is within s .

A little note on DOA Vocabulary 2