详细信息
非光滑函数|x|的Newman有理插值逼近
Rational Interpolation Approximation to Non-smooth Function | x | by Newman Operators
文献类型:期刊文献
中文题名:非光滑函数|x|的Newman有理插值逼近
英文题名:Rational Interpolation Approximation to Non-smooth Function | x | by Newman Operators
作者:詹倩[1];许树声[2]
机构:[1]安徽理工大学理学院,安徽淮南232001;[2]华东理工大学理学院,上海200237
年份:2013
卷号:23
期号:10
起止页码:1269
中文期刊名:长春大学学报
外文期刊名:Journal of Changchun University
基金:2011年度安徽省高校省级自然科学研究项目(KJ2011Z106)
语种:中文
中文关键词:函数逼近;非光滑函数;Newman有理插值算子;渐近公式
外文关键词:functional approximation; non-smooth function; Newman rational interpolation operators; asymptotic formula
摘要:考虑一个新的修正后的Newman节点集,并给出在此节点集上用Newman型有理插值算子逼近非光滑函数|x|的渐近公式。不但证实基于该节点集上的Newman有理插值改进了逼近效果,而且证明其精确的逼近阶为O(e-2nn-14),此逼近误差的阶是对Newman(见[2])and XIE Ting-fan的提高。
Considering a new set of revised Newman nodes, this paper gives the asymptotic formula for the approximation to non-smooth function |x| by Newman rational interpolation operators on the set of the nodes, which shows that Newman rational interpolation on this set of nodes has improved the effect of approximation and the exact order of approximation is O ( e-√2nn-1/4 ), and the order of the approximation error is an improvement of Newman(shown in [2] ) and XIE Ting-fan.
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