Invex multifunctions and duality
Phạm Hữu Sách, B. D. Craven · Numerical Functional Analysis and Optimization · 1991
For optimization problems with multifunction objective and constraints, duality theorems are proved for analogs of the Wolfe and Mond–Weir dual problems, assuming that the multifunctions satisfy a generalization of the invex property for functions. Several characterizations of generalized invexity are obtained.