Geodesic
Some approximation properties of the Kantorovich variant of the Bleimann, Butzer and Hahn operators
Commentationes Mathematicae Universitatis Carolinae, Tome 49 (2008) no. 1, pp. 67-78

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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.
Classification : 41A25
Keywords: Bleimann; Butzer and Hahn operator; Lebesgue-Denjoy point; rate of convergence 
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     title = {Some approximation properties of the {Kantorovich} variant of the {Bleimann,} {Butzer} and {Hahn} operators},
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Nowak, Grzegorz. Some approximation properties of the Kantorovich variant of the Bleimann, Butzer and Hahn operators. Commentationes Mathematicae Universitatis Carolinae, Tome 49 (2008) no. 1, pp. 67-78. http://geodesic.mathdoc.fr/item/CMUC_2008__49_1_a6/