Approximating the inverse of a symmetric
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Gordon Simons; Yi-Ching Yao
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Article
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1998
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Elsevier Science
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English
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It is shown for an n x n symmetric positive definite matrix T = (t, j) with negative offdiagonal elements, positive row sums and satisfying certain bounding conditions that its inverse is well approximated, unifornaly to order l/n 2, by a matrix S = (s,,,