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General H-matrices and their Schur complements |
Cheng-yi ZHANG1,2, Fengmin XU1(), Zongben XU1, Jicheng LI1 |
1. Institute of Information and system Science and School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an 710049, China 2. School of Science, Xi’an Polytechnic University, Xi’an 710048, China |
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Abstract The definitions of θ-ray pattern matrix and θ-ray matrix are firstly proposed to establish some new results on nonsingularity/singularity and convergence of general H-matrices. Then some conditions on the matrix and nonempty are proposed such that A is an invertible H-matrix if A(α) and A/α are both invertible H-matrices. Furthermore, the important results on Schur complement for general H-matrices are presented to give the different necessary and sufficient conditions for the matrix and the subset such that the Schur complement matrix .
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Keywords
Schur complement
convergence
general H-matrices
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Corresponding Author(s):
Fengmin XU
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Issue Date: 26 August 2014
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