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Strong convergence theorems by a relaxed extragradient method for a general system of variational inequalities

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Abstract

In this paper, we introduce and study a relaxed extragradient method for finding solutions of a general system of variational inequalities with inverse-strongly monotone mappings in a real Hilbert space. First, this system of variational inequalities is proven to be equivalent to a fixed point problem of nonexpansive mapping. Second, by using the demi-closedness principle for nonexpansive mappings, we prove that under quite mild conditions the iterative sequence defined by the relaxed extragradient method converges strongly to a solution of this system of variational inequalities. In addition, utilizing this result, we provide some applications of the considered problem not just giving a pure extension of existing mathematical problems.

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Correspondence to Jen-Chih Yao.

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L.-C. Ceng’s research was partially supported by the National Science Foundation of China (10771141), Ph.D. Program Foundation of Ministry of Education of China (20070270004), and Science and Technology Commission of Shanghai Municipality grant (075105118).

J.-C. Yao’s research was partially supported by a grant from the National Science Council.

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Ceng, LC., Wang, Cy. & Yao, JC. Strong convergence theorems by a relaxed extragradient method for a general system of variational inequalities. Math Meth Oper Res 67, 375–390 (2008). https://doi.org/10.1007/s00186-007-0207-4

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