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Approximation properties of weighted Kantorovich type operators in compact disks
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  • 作者:Nazim I Mahmudov (1)
    Mustafa Kara (1)

    1. Eastern Mediterranean University
    ; Mersin 10 ; Gazimagusa ; TRNC ; Turkey
  • 关键词:weighted Bernstein ; Kantorovich operators ; Bernstein ; Kantorovich operator ; complex approximation
  • 刊名:Journal of Inequalities and Applications
  • 出版年:2015
  • 出版时间:December 2015
  • 年:2015
  • 卷:2015
  • 期:1
  • 全文大小:936 KB
  • 参考文献:1. Bernstein, SN: D茅monstration du th茅or猫me de Weierstrass fond茅e sur le calcul de probabilit茅s. Commun. Soc. Math. Kharkow 13(2), 1-2 (1912/1913)
    2. Ditzian, Z, Totik, V: Moduli of Smoothness. Springer, Berlin (1987) CrossRef
    3. Della Vecchia, B, Mastroianni, G, Szabados, J: A weighted generalization of the classical Kantorovich operator. Rend. Circ. Mat. Palermo Suppl. 82, 1-27 (2010)
    4. Della Vecchia, B, Mastroianni, G, Szabados, J: A weighted generalization of the classical Kantorovich operator. II. Saturation. Mediterr. J. Math. 10(1), 1-15 (2013) CrossRef
    5. Yu, DS: Weighted approximation by modified Kantorovich-Bernstein operators. Acta Math. Hung. 141(1-2), 132-149 (2013) CrossRef
    6. Mahmudov, NI, Kara, M: Approximation theorems for generalized complex Kantorovich-type operators. J. Appl. Math. 2012, Article ID 454579 (2012) CrossRef
    7. Gal, SG: Approximation by Complex Bernstein and Convolution Type Operators. Series on Concrete and Applicable Mathematics, vol.聽8. World Scientific, Singapore (2009)
    8. Gal, SG: Overconvergence in Complex Approximation. Springer, New York (2013) CrossRef
  • 刊物主题:Analysis; Applications of Mathematics; Mathematics, general;
  • 出版者:Springer International Publishing
  • ISSN:1029-242X
文摘
In this paper, we discuss the approximation properties of the complex weighted Kantorovich type operators. Quantitative estimates of the convergence, the Voronovskaja type theorem, and saturation of convergence for complex weighted Kantorovich polynomials attached to analytic functions in compact disks will be given. In particular, we show that for functions analytic in \(\{ z\in C:\vert z\vert , the rate of approximation by the weighted complex Kantorovich type operators is \(1/n\) .

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