一类多元post-widder算子线性组合的一致逼近  

Uniform Approximation for Linear-Combination of Multidimensional Post-Widder Operators

作　　者：周小华[1] 

机构地区：[1]绍兴文理学院上虞分院数学系,浙江上虞312300

出　　处：《绍兴文理学院学报》2008年第7期5-9,共5页Journal of Shaoxing University

摘　　要：主要讨论了一类多元post-widder算子的线性逼近性质,建立了一致逼近下的正、逆定理,并给出了逼近阶的特征刻画.In this paper, we discuss the approximation properties of linear combinations of multidimensional post - widder operators, and establish the theory and its reverse under the uniform approximation. At last, the characterization of approximation degree is given.

关 键 词：多元post-widder算子 多元线性组合 一致逼近 特征刻划 

分 类 号：O174.41[理学—数学]