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DEGREE OF COPOSITIVE POLYNOMIAL APPROXIMATION

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摘要 Denotebyn（f）thedegreeofcopositiveapproximationtof（x）bypolynomialsofdegree≤n.Forfunctionf（x）∈Ck[-1,1]whichalternatesinsignfinitelymanytimesin[-1,1],theauthorobtainsthefollowingJacksontypeestimatesn（f）≤Cn-kw(fk,1/n)foaanypositiveintegerk.

DOI 54k16g0ldk/732509

作者余祥明

机构地区不详

出处《数学年刊：B辑英文版》 1989年3期

关键词 finitely INTEGER ESTIMATES POLYNOMIAL SIGNA inequality

分类 [理学][基础数学]

出版日期 1989年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）

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来源期刊

数学年刊：B辑英文版

数学年刊：B辑英文版

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相关关键词

finitely INTEGER ESTIMATES POLYNOMIAL SIGNA inequality

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