Supporting hyperplane theorem: at every boundary point x₀ of a convex set C in a normed space there exists a supporting hyperplane H = {x : a · x = b} through x₀ such that C is contained in the closed half-space {x : a · x ≤ b}. …
Supporting hyperplane theorem: at every boundary point x₀ of a convex set C in a normed space there exists a supporting hyperplane H = {x : a · x = b} through x₀ such that C is contained in the closed half-space {x : a · x ≤ b}. …