Strong Converse Inequalities for Szasz-Mirakjan Operators with Weights  

作　　者：LIU Guo-jun XUE Yin-chuan SUN Wei-bin 

机构地区：[1]School of Mathematics and Computer Science, Ningxia University, Yinchuan 750021, China [2]College of Science, Xidian University, Xi＇an 710071, China

出　　处：《Chinese Quarterly Journal of Mathematics》2008年第3期384-389,共6页数学季刊（英文版）

基　　金：the Foundation of Higher School of Ningxia(04M33);the NSF of Ningxia University(ZR0622)

摘　　要：In this paper, we give the strong converse inequalities of type B with the new K-functional Kλα(f,t2)w(0 ≤λ≤ 1, 0 < α < 2) on weighted approximation for Sz′asz-Mirakjan operators, which extend the previous results.

关 键 词：Szasz-Mirakjan operators strong converse inequalities APPROXIMATION 

分 类 号：O174.41[理学—数学]