Benoist, Joël; Popovici, Nicolae - In: Mathematical Methods of Operations Research 57 (2003) 3, pp. 427-435
The aim of this paper is to characterize in terms of classical convexity and quasiconvexity of extended real-valued functions those set-valued maps which are K-convex or K-quasiconvex with respect to a convex cone K. In particular, we recover some known characterizations of K-convex and...