### Simultaneous approximation for the Phillips operators.

Govil, N.K., Gupta, Vijay, Noor, Muhammad Aslam (2006)

International Journal of Mathematics and Mathematical Sciences

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Govil, N.K., Gupta, Vijay, Noor, Muhammad Aslam (2006)

International Journal of Mathematics and Mathematical Sciences

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Gupta, Vijay, Ispir, Nurhayat (2004)

International Journal of Mathematics and Mathematical Sciences

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Grzegorz Nowak (2008)

Commentationes Mathematicae Universitatis Carolinae

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For some classes of functions $f$ locally integrable in the sense of Lebesgue or Denjoy-Perron on the interval $[0;\infty )$, the Kantorovich type modification of the Bleimann, Butzer and Hahn operators is considered. The rate of pointwise convergence of these operators at the Lebesgue or Lebesgue-Denjoy points of $f$ is estimated.

Sury, B., Wang, Tianming, Zhao, Feng-Zhen (2004)

Journal of Integer Sequences [electronic only]

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Gupta, Vijay, Kumar, Niraj (2003)

International Journal of Mathematics and Mathematical Sciences

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Gupta, Vijay, Doğru, Ogün (2005)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

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Álvarez-Nodarse, R., Arvesú, J., Marcellán, F. (2004)

Journal of Applied Mathematics

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Andrzej Kwaśniewski, Ewa Borak (2004)

Open Mathematics

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“A Calculus of Sequences” started in 1936 by Ward constitutes the general scheme for extensions of classical operator calculus of Rota-Mullin considered by many afterwards and after Ward. Because of the notation we shall call the Ward's calculus of sequences in its afterwards elaborated form-a ψ-calculus. The ψ-calculus in parts appears to be almost automatic, natural extension of classical operator calculus of Rota-Mullin or equivalently-of umbral calculus of Roman and Rota. At the...

Marcellán, F., Petronilho, J. (1999)

Portugaliae Mathematica

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Lj. Dedić, Josip E. Pečarić, Nenad Ujević (2003)

Czechoslovak Mathematical Journal

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Some generalizations of the Ostrowski inequality, the Milovanović-Pečarić-Fink inequality, the Dragomir-Agarwal inequality and the Hadamard inequality are given.