摘要
给出了 Post- Widder算子线性组合加 Jacobi权的 Lp 同时逼近的正、逆定理和逼近阶的特征刻划 .
In this paper,the weighted simultaneous L p approximation with Jacobi weights by linear combinations of Post Widder operators is considered,the direct and converse and the characterization of approximation are given.
出处
《纯粹数学与应用数学》
CSCD
2000年第4期33-40,共8页
Pure and Applied Mathematics
基金
浙江省重点学科基金资助课题
关键词
Post-Widder算子
加权同时逼近
线性组合
加权D-T光滑模
Post Widder operators,weighted simultaneous approximation,linear combination,weighted Ditzian Totik moduli of smoothensp
