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Approximation of Finite Hilbert and Hadamard Transforms by Using Equally Spaced Nodes

Author

Listed:
  • Frank Filbir

    (Department of Scientific Computing, Helmholtz Zentrum München German Research Center for Environmental Health, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
    Applied Numerical Analysis, Fakultät für Mathematik, Technische Universität München, Boltzmannstrasse 3 85748 Garching bei München. Research Center, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany)

  • Donatella Occorsio

    (Department of Mathematics, Computer Science and Economics, University of Basilicata, viale dell’Ateneo Lucano 10, 85100 Potenza, Italy
    C.N.R. National Research Council of Italy, IAC Institute for Applied Computing “Mauro Picone”, via P. Castellino, 111, 80131 Napoli, Italy)

  • Woula Themistoclakis

    (C.N.R. National Research Council of Italy, IAC Institute for Applied Computing “Mauro Picone”, via P. Castellino, 111, 80131 Napoli, Italy)

Abstract

In the present paper, we propose a numerical method for the simultaneous approximation of the finite Hilbert and Hadamard transforms of a given function f , supposing to know only the samples of f at equidistant points. As reference interval we consider [ − 1 , 1 ] and as approximation tool we use iterated Boolean sums of Bernstein polynomials, also known as generalized Bernstein polynomials. Pointwise estimates of the errors are proved, and some numerical tests are given to show the performance of the procedures and the theoretical results.

Suggested Citation

  • Frank Filbir & Donatella Occorsio & Woula Themistoclakis, 2020. "Approximation of Finite Hilbert and Hadamard Transforms by Using Equally Spaced Nodes," Mathematics, MDPI, vol. 8(4), pages 1-23, April.
  • Handle: RePEc:gam:jmathe:v:8:y:2020:i:4:p:542-:d:342244
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