Interpolation at a Few Points
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Daniel Wulbert
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Article
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1999
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Elsevier Science
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English
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For k=2 and 3, B. Shekhtman proved that n+k&1 is the smallest dimension of a subspace, F C(R n ) that can interpolate to k specified real values at k distinct points in R n . Here we characterize such spaces that interpolate at a few points. The characterization provides an economical proof of Shekh