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Quantitative q -Voronovskaya and q -Grüss–Voronovskaya-type results for q -Szász operators

Quantitative q -Voronovskaya and q -Grüss–Voronovskaya-type results for q -Szász operators Abstract In the present paper, we mainly study quantitative Voronovskaya-type theorems for q -Szász operators defined in ( 20 ). We consider weighted spaces of functions and the corresponding weighted modulus of continuity. We obtain the quantitative q -Voronovskaya-type theorem and the q -Grüss–Voronovskaya-type theorem in terms of the weighted modulus of continuity of q -derivatives of the approximated function. In this way, we either obtain the rate of pointwise convergence of q -Szász operators or we present these results for a subspace of continuous functions, although the classical ones are valid for differentiable functions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Georgian Mathematical Journal de Gruyter

Quantitative q -Voronovskaya and q -Grüss–Voronovskaya-type results for q -Szász operators

Georgian Mathematical Journal , Volume 23 (4) – Dec 1, 2016

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References (25)

Publisher
de Gruyter
Copyright
Copyright © 2016 by the
ISSN
1072-947X
eISSN
1572-9176
DOI
10.1515/gmj-2016-0007
Publisher site
See Article on Publisher Site

Abstract

Abstract In the present paper, we mainly study quantitative Voronovskaya-type theorems for q -Szász operators defined in ( 20 ). We consider weighted spaces of functions and the corresponding weighted modulus of continuity. We obtain the quantitative q -Voronovskaya-type theorem and the q -Grüss–Voronovskaya-type theorem in terms of the weighted modulus of continuity of q -derivatives of the approximated function. In this way, we either obtain the rate of pointwise convergence of q -Szász operators or we present these results for a subspace of continuous functions, although the classical ones are valid for differentiable functions.

Journal

Georgian Mathematical Journalde Gruyter

Published: Dec 1, 2016

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