A closed formula for the Čebyšev barycentric weights of optimal approximation in \(H^ 2\) (Q1315196)
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scientific article; zbMATH DE number 510196
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A closed formula for the Čebyšev barycentric weights of optimal approximation in \(H^ 2\) |
scientific article; zbMATH DE number 510196 |
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A closed formula for the Čebyšev barycentric weights of optimal approximation in \(H^ 2\) (English)
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24 February 1994
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A closed barycentric formula for the optimal interpolant in \(H^ 2\) corresponding to the Chebyshev points of the first kind is given. Moreover, only \(O(n)\) operations are necessary for computing all corresponding weights. At last some numerical examples are illustrated for the comparison with other approximation formulas.
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barycentric formula
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optimal interpolant
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Chebyshev points
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numerical examples
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