Lower estimates for centered Bernstein-type operators

被引：0

作者：

Sangüesa, C ^{[1
]}

机构：

[1] Univ Zaragoza, Fac Ciencias, Dept Metodos Estadist, E-50009 Zaragoza, Spain

来源：

CONSTRUCTIVE APPROXIMATION | 2002年 / 18卷 / 01期

关键词：

positive linear operator; converse inequality; Ditzian-Totik modulus of smoothness; Bernstein polynomials; post-Widder operator;

D O I：

暂无

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We obtain converse inequalities of type A in the uniform distance for centered Bernstein-type operators in terms of suitable Ditzian-Totik moduli of smoothness. We use probabilistic representations of the operators in terms of stochastic processes as well as approximation-theoretic techniques.

引用

页码：145 / 159

页数：15

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