Duality for multiobjective fractional programming involving n-set functions sup *

For a multiobjective fractional programming problem (MFP) involving vector valued n-set functions, the dual problem (MFD) and the generalized dual problem (GMFD) are formulated and the concept of efficiency is used to prove the weak, strong and strict converse duality results between the associated parametric problem (MFP) λ and (MFD) under generalized ρ-convexity assumptions. Also, those duality results between (MFP) λ, and (GMFD) are obtained

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