摘要
讨论了光滑模与K-泛函的关系,给出Baskakov-Durrmeyer算子线性组合加权逼近Stechkin-Marchaud型不等式.同时,得到其逼近的逆定理.
This paper studies the equivalence relation between K-functional and molduli of smoothness, and gives the weighted Stechkin-Marchaud-type inequalities of approximation for linear combination of Baskakov-Durrmeyer operators. Moreover, this paper also obtains the inverse result of weighted approximation for linear combination of Baskakov-Durrmeyer operators with ωo^2r (f ;t)w,p.
出处
《西南民族大学学报(自然科学版)》
CAS
2010年第1期28-31,共4页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家自然科学基金(No.10671019)
台州学院重点科研项目(No.09ZD08)