Open Access Research

Nondifferentiable mathematical programming involving ( G , β ) -invexity

Dehui Yuan1, Xiaoling Liu1*, Shengyun Yang2 and Guoming Lai2

Author Affiliations

1 Department of Math., Hanshan Normal University, Chaozhou, Guangdong, 521041, China

2 Department of Comp. Tech., Hanshan Normal University, Chaozhou, Guangdong, 521041, China

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Journal of Inequalities and Applications 2012, 2012:256 doi:10.1186/1029-242X-2012-256

Published: 1 November 2012

Abstract

In this paper, we define new vector generalized convexity, namely nondifferentiable vector <a onClick="popup('http://www.journalofinequalitiesandapplications.com/content/2012/1/256/mathml/M3','MathML',630,470);return false;" target="_blank" href="http://www.journalofinequalitiesandapplications.com/content/2012/1/256/mathml/M3">View MathML</a>-invexity, for a given locally Lipschitz vector function f. Basing on this new nondifferentiable vector generalized invexity, we have managed to deal with nondifferentiable nonlinear programming problems under some assumptions. Firstly, we present G-Karush-Kuhn-Tucker necessary optimality conditions for nonsmooth mathematical programming problems. With the new vector generalized invexity assumption, we also obtain G-Karush-Kuhn-Tucker sufficient optimality conditions for the same programming problems. Moreover, we establish duality results for this kind of multiobjective programming problems. In the end, a suitable example illustrates that the new optimality results are more useful for some class of optimization problems than the optimality conditions with invex functions.

MSC: 90C26.

Keywords:
<a onClick="popup('http://www.journalofinequalitiesandapplications.com/content/2012/1/256/mathml/M3','MathML',630,470);return false;" target="_blank" href="http://www.journalofinequalitiesandapplications.com/content/2012/1/256/mathml/M3">View MathML</a>-invexity; G-Karush-Kuhn-Tucker sufficient optimality conditions; G-Karush-Kuhn-Tucker necessary optimality conditions; duality