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Separation Functions and Optimality Conditions in Vector Optimization

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Abstract

In this paper, we propose weak separation functions in the image space for general constrained vector optimization problems on strong and weak vector minimum points. Gerstewitz function is applied to construct a special class of nonlinear separation functions as well as the corresponding generalized Lagrangian functions. By virtue of such nonlinear separation functions, we derive Lagrangian-type sufficient optimality conditions in a general context. Especially for nonconvex problems, we establish Lagrangian-type necessary optimality conditions under suitable restriction conditions, and we further deduce Karush–Kuhn–Tucker necessary conditions in terms of Clarke subdifferentials.

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Acknowledgments

The authors express their sincere gratitude to Professor F. Giannessi and the referees for comments and valuable suggestions. This research was supported by the National Natural Science Foundation of China (Grant Numbers: 11171362, 11571055).

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Authors and Affiliations

  1. College of Mathematics and Statistics, Chongqing University, Chongqing, 401331, China

    Manxue You & Shengjie Li

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  1. Manxue You
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  2. Shengjie Li
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Correspondence to Shengjie Li.

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Communicated by Jafar Zafarani.

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You, M., Li, S. Separation Functions and Optimality Conditions in Vector Optimization. J Optim Theory Appl 175, 527–544 (2017). https://doi.org/10.1007/s10957-016-1029-4

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  • DOI: https://doi.org/10.1007/s10957-016-1029-4

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