摘要
利用Polya基函数系和三对角线无穷方阵,构造一类非正性Lupas-Kantorovich型算子,并给出其点态逼近特征.
A class of nonpositive Lupas-Kantorovich type operators is formed by Polya basic function system and by tridiagonal infinite matrix,and its pointwise approximation characterization is obtained.
出处
《厦门大学学报(自然科学版)》
CAS
CSCD
北大核心
1996年第3期315-321,共7页
Journal of Xiamen University:Natural Science
基金
国家自然科学基金
关键词
基函数
无穷方阵
L-P型算子
逼近特征
Basic function, Infinite matrix,Approximation characterization