Global and pointwise estimates for Müntz rational approximation(Müntz有理逼近的整体估计和点态估计)

利用K-泛函和光滑模,给出了连续函数和光滑函数的Müntz有理逼近的速度估计,得到了 一个融整体估计和点态估计为一体的Jackson型定理.进一步考虑了中有理函数对光滑函数的逼近,其逼近速度要优于通常的Müntz有理函数的逼近.

Bibliographic Details
Main Authors: WANGJunxia(王军霞), YUDansheng(虞旦盛)
Format: Article
Language:zho
Published: Zhejiang University Press 2014-03-01
Series:Zhejiang Daxue xuebao. Lixue ban
Subjects:
Online Access:https://doi.org/10.3785/j.issn.1008-9497.2014.02.004