Stancu型算子的逼近定理  

Approximation by Stancu-Type Operator

作　　者：陈文忠[1] 古四毛[1] 

机构地区：[1]厦门大学数学系

出　　处：《厦门大学学报（自然科学版）》1993年第6期679-684,共6页Journal of Xiamen University：Natural Science

基　　金：福建省自然科学基金

摘　　要：引进Stancu型算子,并应用概率论方法,建立由连续模表达的逼近正定理,以及给出对有界变差函数的点态逼近度估计。For the functions on the semiaxis, the authors introduce a Stancu-type operatoe and the probabilistic arguments are used to prove the theorem of approximation. The rates of cenverhence are given in tems of the first and second moduli of continuity. Moreover, a pointwise approximation is given for the function of bounded variation.

关 键 词：STANCU算子 点态逼近度 逼近 

分 类 号：O174.41[理学—数学]