Sufficiency and duality in nondifferentiable multiobjective programming involving generalized type I functions

Abstract Recently, Hachimi and Aghezzaf defined generalized ( F , α , ρ , d ) -type I functions, a new class of functions that unifies several concepts of generalized type I functions. In this paper, the generalized ( F , α , ρ , d ) -type I functions are extended to nondifferentiable functions. By utilizing the new concepts, we obtain several sufficient optimality conditions and prove mixed type and Mond–Weir type duality results for the nondifferentiable multiobjective programming problem.

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