Pointwise Estimate for Linear Combinatio
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Shunsheng Guo; Lixia Liu; Qiulan Qi
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Article
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2002
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Elsevier Science
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English
β 115 KB
For linear combinations of Bernstein-Kantorovich operators K n r f x , we give an equivalent theorem with Ο 2r Ο Ξ» f t . The theorem unites the corresponding results of classical and Ditzian-Totik moduli of smoothness.