Set containment characterization with strict and weak quasiconvex inequalities

Dual characterizations of the containment of a convex set, de-ned by infinite quasiconvex constraints, in an evenly convex set, and in a reverse convex set, defined by infinite quasiconvex constraints, are provided. Notions of quasiconjugate for quasiconvex functions, λ-quasiconjugate and λ- semiconjugate, play important roles to derive the characterizations of the set containments.