JAT 2007 | Sciweavers

39

JAT
2007

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On Lebesgue-type inequalities for greedy approximation

14 years 2 months ago

We study the efﬁciency of greedy algorithms with regard to redundant dictionaries in Hilbert spaces. We obtain upper estimates for the errors of the Pure Greedy Algorithm and th...

David L. Donoho, Michael Elad, Vladimir N. Temlyak...

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19

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JAT
2007

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Unbounded Jacobi matrices at critical coupling

14 years 2 months ago

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David Damanik, Serguei Naboko

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27

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JAT
2007

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On real-analytic recurrence relations for cardinal exponential B-splines

14 years 2 months ago

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Let LN+1 be a linear differential operator of order N + 1 with constant coefﬁcients and real eigenvalues 1, . . . , N+1, let E( N+1) be the space of all C∞-solutions of LN+1 o...

J. M. Aldaz, Ognyan Kounchev, Hermann Render

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30

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JAT
2007

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Quasi-interpolation in the Fourier algebra

14 years 2 months ago

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We derive new convergence results for the Schoenberg operator and more general quasi-interpolation operators. In particular, we prove that natural conditions on the generator func...

Hans Georg Feichtinger, Norbert Kaiblinger

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29

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JAT
2007

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Multiple orthogonal polynomials of mixed type and non-intersecting Brownian motions

14 years 2 months ago

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We present a generalization of multiple orthogonal polynomials of type I and type II, which we call multiple orthogonal polynomials of mixed type. Some basic properties are formul...

Evi Daems, Arno B. J. Kuijlaars

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