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Abstract
Using the least element solution of the P0 and Z matrix linear complementarity problem (LCP), we define an implicit solution function for linear complementarity constraints (LCC). We show that the sequence of solution functions defined by the unique solution of the regularized LCP is monotonically increasing and converges to the implicit solution function as the regularization parameter goes down to zero. Moreover, each component of the implicit solution function is convex. We find that the solution set of the irreducible P0 and Z matrix LCP can be represented by the least element solution and a Perron–Frobenius eigenvector. These results are applied to convex reformulation of mathematical programs with P0 and Z matrix LCC. Preliminary numerical results show the effectiveness and the efficiency of the reformulation.
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Department of Applied Mathematics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
Xiaojun Chen
Department of Applied Mathematics and Software, Central South University, 410083, Changsha, Hunan, People’s Republic of China
Shuhuang Xiang
- Xiaojun Chen
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Correspondence toXiaojun Chen.
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X. Chen’s work was supported partly by the Research Grants Council of Hong Kong and S. Xiang’s work was supported partly by NSF of China (No.10771218).
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Chen, X., Xiang, S. Implicit solution function of P0 and Z matrix linear complementarity constraints.Math. Program.128, 1–18 (2011). https://doi.org/10.1007/s10107-009-0291-8
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