Error estimates of pointwise approximation, that are not possible by polynomials, are obtained by simple rational operators based on exponential-type meshes, improving previous results. Rational curves deduced from such operators are analyzed by Discrete Fourier Transform and a CAGD modeling technique for Shepard-type curves by truncated DFT and the PIA algorithm is developed.
Rational approximation on exponential meshes / Amato, U.; Della Vecchia, B.. - In: SYMMETRY. - ISSN 2073-8994. - 12:12(2020), pp. 1-15. [10.3390/sym12121999]
Rational approximation on exponential meshes
Della Vecchia B.
Methodology
2020
Abstract
Error estimates of pointwise approximation, that are not possible by polynomials, are obtained by simple rational operators based on exponential-type meshes, improving previous results. Rational curves deduced from such operators are analyzed by Discrete Fourier Transform and a CAGD modeling technique for Shepard-type curves by truncated DFT and the PIA algorithm is developed.File allegati a questo prodotto
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