On the zero-divergence of equidistant Lagrange interpolation (Q1596339)
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scientific article; zbMATH DE number 1562961
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On the zero-divergence of equidistant Lagrange interpolation |
scientific article; zbMATH DE number 1562961 |
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On the zero-divergence of equidistant Lagrange interpolation (English)
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26 August 2001
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It is known [cf. \textit{T. M. Mills} and \textit{S. J. Smith} [J. Aust. Math. Soc., Ser. A 52, No. 1, 111-118 (1992; Zbl 0748.41001)] that the Lebesgue function associated with equidistant Lagrange polynomial interpolation grows logarithmically at 0. The author gives an explicit construction of a function continuous on \([-1,1]\) whose equidistant Lagrange interpolation diverges at 0, and the rate of divergence is close to the possible maximal one.
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Lagrange interpolation
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equidistant nodes
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divergence
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