Best Interpolatory Approximation in Norm
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Frank Deutsch; Sizwe Mabizela
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Article
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1996
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Elsevier Science
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English
β 542 KB
A theory of best approximation with interpolatory contraints from a finitedimensional subspace M of a normed linear space X is developed. In particular, to each x # X, best approximations are sought from a subset M(x) of M which depends on the element x being approximated. It is shown that this ``pa