Document Type : Research Paper

**Authors**

Department of Mathematics, Indian Institute of Technology Roorkee, Roorkee 247 667, India.

**Abstract**

In this article, we formulate two dual models Wolfe and Mond-Weir related to symmetric nondifferentiable multiobjective programming problems. Furthermore, weak, strong and converse duality results are established under $K$-$G_f$-invexity assumptions. Nontrivial examples have also been depicted to illustrate the theorems obtained in the paper. Results established in this paper unify and extend some previously known results appeared in the literature

**Keywords**

**Main Subjects**

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December 2017

Pages 2233-2258

**Receive Date:**05 July 2016**Revise Date:**31 January 2017**Accept Date:**31 January 2017**First Publish Date:**30 December 2017