Sikkema-Kantorovich算子在B_α空间的加权逼近  

Weighted Approximation for Sikkema-Kantorovich Operators in B_α Spaces

作　　者：孙渭滨[1] 

机构地区：[1]宁夏大学数学计算机学院,宁夏银川750021

出　　处：《宁夏大学学报（自然科学版）》2004年第4期297-298,308,共3页Journal of Ningxia University(Natural Science Edition)

基　　金：宁夏高等学校科研基金资助项目(004M33)

摘　　要：通过引入带权函数的光滑模,借助光滑模K泛函的等价性,研究了Sikkema Kantorovich算子在Bα空间的加权逼近,得到了逼近的强型正定理.By introducing smooth modulus with weighted function, and with the help of the equivalence between smooth modulus and K-functional, the problem of the weighted approximation for Sikkema-Kantorovich operators in B_α spaces is studied, then the direct theorem of strong type is obtained.

关 键 词：Sikkema—Kantorovich算子 BA空间 加权逼近 

分 类 号：O174.41[理学—数学]