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一种拟Grünwald插值算子的Lp收敛速度

Guichen Tian,Guiqiao Xu,Huajie Zhao

NUMERICAL MATHEMATICS A JOURNAL OF CHINESE UNIVERSITIES（2006）

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Abstract
1引言 设f(x)为[-1,1]上的连续函数,则以第二类Chebyshev多项式Un(x)(Un(cosθ)=sin(n+1)θ/sinθ)的全部零点{xk=cosk/n+1π}:1为插值结点组的f的Grünwald插值多项式为
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