Convex Sets and Convex Functions
We have encountered convex sets and convex functions on several occasions. Here we would like to discuss these notions in a more systematic way. Among nonlinear functions, the convex ones are the closest ones to the linear, in fact, functions that are convex and concave at the same time are just the linear affine functions.
KeywordsSaddle Point Convex Function Extreme Point Convex Body Dual Problem
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