In this paper, we establish sufficient optimality conditions for the (weak) efficiency to multiobjective fractional programming problems involving generalized ( F , α , ρ , d ) -V-type I functions. Using the optimality conditions, we also investigate a parametric-type duality for multiobjective fractional programming problems concerning a generalized ( F , α , ρ , d ) -V-type I function. Then some duality theorems are proved for such problems in the framework of generalized ( F , α , ρ , d ) -V-type I functions. MSC:90C46, 90C32, 90C30.
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