摘要给出了Sza'sz型算子线性组合的点态逼近的正。The direct and inverse theorems of the pointwise approximation are given for the linear combinations of Sza'sz type operators.
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3Ditzian Z, Totik. Moduli of Smoothness. Springei Series in Computational Mathmatics[M]. New York: Springer Verleg, 1987.
