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$$D$$-invexity and optimality conditions. (English) Zbl 0755.90074
Summary: A generalization of convexity, called $$d$$-invexity, is introduced. Substituting $$d$$-invex for convex, we get some optimality conditions for nondifferentiable multiobjective programming. The application is demonstrated by an example.

##### MSC:
 90C29 Multi-objective and goal programming 49J52 Nonsmooth analysis 26B25 Convexity of real functions of several variables, generalizations 90C30 Nonlinear programming
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##### References:
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