摘要
Inordertostudytheapproximationbyreciprocalsofpolynomialswithrealcoefficients,onealwaysassumesthattheapproximatedfunctionhasafixedsignonthegiveninterval.Sometimes,theapproximatedfunctionispermittedtohavefinitesignchanges,suchasl(l≥1)times.ZhouSongpinghasstudiedthecasel=1andl≥2inLpspacesinorderofpriority.Inthispaper,westudiedthecasel≥2inOrliczspacesbyusingthefunctionextend,modifiedJacksonkernel,Hardy-Littlewoodmaximalfunction,Cauchy-Schwarzinequality,andobtainedtheJacksontypeestimation.
出版日期
2013年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
