A link between Lebesgue constants and Hermite-Fejér interpolation
1986 ◽
Vol 33
(2)
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pp. 207-218
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Keyword(s):
The One
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A review of the development of estimates for Lebesgue constants associated with Lagrange interpolation on the one hand, and estimates for the rate of convergence of Hermite-Fejér interpolation on the other hand, provides a historical perspective for the following surprising, close link between these apparently diverse concepts. Denoting by Λn (T) the Lebesgue constant of order n and by Δn (T) the maximum interpolation error for functions of class Lip 1 by Hexmite-Fejér interpolation polynomials of degree not exceeding 2n − 1, based on the zeros of the Chebyshev polynomial of first kind, we discover that, for even values of n, Λn(T) = n Δn(T).
2000 ◽
Vol 62
(3)
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pp. 357-368
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2019 ◽
Vol 19
(5-6)
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pp. 705-721
2009 ◽
Vol 22
(1)
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pp. 1-28
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