Convex Set Definition 1(Convex Set).A set Y is convex if for any x,y e,all the points on the line segment connecting x and y also belong to t,i.e., a∈0,1，ax+(1-a)y∈X. convex sets? X X Advanced Optimization(Fall 2023) Lecture 2.Convex Optimization Basics 7 Advanced Optimization (Fall 2023) Lecture 2. Convex Optimization Basics 7 Convex Set convex sets?