Preinvexity in Multiobjective Fractional Programming
A. Singh, Surjeet Kaur Suneja, Norma G. Rueda · Journal of Information and Optimization Sciences · 1992
Saddle point optimality criteria and Lagrangian type duality theory are developed for a multiobjective fractional programming problem. The functions involved in the objective function and the constraints are assumed to be preinvex and not necessarily differentiable.