Bulletin of the Australian Mathematical Society

Research Article

Invex functions and constrained local minima

B.D. Cravena1

a1 Department of Mathematics, University of Melbourne, Parkville, Victoria 3052, Australia.


If a certain weakening of convexity holds for the objective and all constraint functions in a nonconvex constrained minimization problem, Hanson showed that the Kuhn-Tucker necessary conditions are sufficient for a minimum. This property is now generalized to a property, called K-invex, of a vector function in relation to a convex cone K. Necessary conditions and sufficient conditions are obtained for a function f to be K-invex. This leads to a new second order sufficient condition for a constrained minimum.

(Received July 27 1981)