On multivariate de la Vallée Poussin-type projection operators
- Autores: Zsolt Németh
- Localización: Journal of approximation theory, ISSN 0021-9045, Vol. 186, Nº 1, 2014, págs. 12-27
- Idioma: inglés
- DOI: 10.1016/j.jat.2014.06.005
- Enlaces
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Resumen
This paper deals with the de la Vall´ee Poussin means of the triangular partial sums of multivariate Fourier series. We determine the exact order of the corresponding operator norms. The lower estimation of these norms will be extended to a class of projection operators having similar projection properties as the de la Vallée Poussin mean.
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