The nearness problems for symmetric matr
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Yongxin Yuan; Hua Dai
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Article
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2008
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Elsevier Science
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English
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In this paper, we first give the representation of the general solution of the following least-squares problem (LSP): given a matrix X โ R nรp and symmetric matrices ) is the r ร r leading principal submatrix of the matrix A. We then consider a best approximation problem: given an nรn symmetric mat