Abstract

Summary: This paper gives a necessary condition for the Hartley proper efficiency in a vector optimization problem whose objectives and constraints are described by multifunctions \(F\) and \(G\). This condition is established under a quasiconvexity requirement of the support functions of \(F\) and \(G\) or the generalized cone-convexity of a multifunction constructed from \(F\) and \(G\).