ε-Mixed type duality for nonconvex multiobjective programs with an infinite number of constraints

Using a scalarization method, approximate optimality conditions of a multiobjective nonconvex optimization problem which has an infinite number of constraints are established. Approximate duality theorems for mixed duality are given. Results on approximate duality in Wolfe type and Mond-Weir type are also derived. Approximate saddle point theorems of an approximate vector Lagrangian function are investigated. Copyright Springer Science+Business Media New York 2013