Abstract
The main goal of this paper is to introduce and study bilevel vector equilibrium problems. We first establish some existence results for solutions of vector equilibrium problems and mixed vector equilibrium problems. We study the existence of solutions of bilevel vector equilibrium problems by considering a vector Thikhonov-type regularization procedure. By using this regularization procedure and existence results for mixed vector equilibrium problems, we establish some existence results for solutions of bilevel vector equilibrium problems. By using the auxiliary principle, we propose an algorithm for finding the approximate solutions of bilevel vector equilibrium problems. The strong convergence of the proposed algorithm is also studied.
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Acknowledgements
This research was funded by the National Plan for Science, Technology and Innovation (MAARIFAH)—King Abdulaziz City for Science and Technology—through the Science and Technology Unit at King Fahd University of Petroleum and Minerals (KFUPM)—the Kingdom of Saudi Arabia, Award Number 13-MAT1682-04.
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Communicated by I.V. Konnov.
Authors are grateful to the referees for their valuable comments and suggestions to improve the previous draft of the manuscript.
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Chadli, O., Ansari, Q.H. & Al-Homidan, S. Existence of Solutions and Algorithms for Bilevel Vector Equilibrium Problems: An Auxiliary Principle Technique. J Optim Theory Appl 172, 726–758 (2017). https://doi.org/10.1007/s10957-017-1062-y
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DOI: https://doi.org/10.1007/s10957-017-1062-y
Keywords
- Bilevel vector equilibrium problems
- Mixed vector equilibrium problems
- Vector equilibrium problems
- Bilevel programs
- Auxiliary principle
- C-maximal bifunctions
- C-monotone bifunctions
- C-convex functions
- C-upper (lower) semicontinuity
- Convergence analysis