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    On discrete Picard operators
    (Wiley-Blackwell, 2016) Aral, Ali; Ilarslan, Hatice Gul Ince; Tunca, Gulen Bascanbaz
    The present paper is concerned with the approximation properties of discrete version of Picard operators. We first give exact equalities for the moments of the operators. In calculations of these moments, Eulerian numbers play a crucial role. We discuss convergence of these operators in weighted spaces and give Voronovskaya-type asymptotic formula. The weighted approximation of the operators in quantitative mean in terms of different modulus of continuities is also considered. We emphasize that the rate of convergence of the operators is better than the one obtained in . Copyright (c) 2016 John Wiley & Sons, Ltd.