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Interpolating polynomial wavelets on [?1,1]

Interpolating polynomial wavelets on \([-1,1]\)
Authors: Capobianco MR; Themistoclakis W;

Interpolating polynomial wavelets on [?1,1]

Abstract

The authors use a system of orthogonal polynomials with respect to the four Chebyshev weights, \(1/\sqrt(1-x^2)\), \(\sqrt(1-x^2)\), \(\sqrt{[(1-x)/(1+x)]}\) and \(\sqrt{[(1+x)/(1-x)]}\), with positive leading coefficients and Darboux kernels to construct four interpolating scaling functions and interpolating wavelets with a multiresolution structure. These wavelets, based on de la Vallée Poussin interpolation are more localized and give better approximation in the uniform weighted norm than polynomial wavelets based on Lagrange interpolation. However, the matrices involved in the two-scale relations are not orthogonal. The structure of these matrices is studied in detail: the elements of the inverse matrices are explicitly known and the computation of matrix-vector products can be performed by means of fast discrete cosine and sine transforms.

Keywords

polynomial wavelets, interpolating scaling functions, interpolating wavelets, Fast discrete cosine and sine transforms., Interpolation, fast discrete cosine and sine transforms, multiresolution, de la Vallée Poussin means, Numerical interpolation, Numerical methods for wavelets, Chebyshev polynomials, de la Vallée Poussin mean, de la Vallée Poussin means, Polynomial wavelets

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    16
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    Top 10%
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    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
16
Top 10%
Top 10%
Average
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