Jensen, Affine, Conic, Quasiconvex, Convex Optimization.
notation is given by: Below is the epigraph of a convex function in 3D. The shaded space forms the epigraph and the sub level set is formed by the square in the x-y plane. Epigraph of a convex function in 3D (image by author) Now, it can be said that a function f is convex, if and only if its