Baskakov算子导数的点态和整体定理  

Pointwise and Global Theorems for Derivatives of Baskakov Operators

作　　者：王丽[1] 薛银川[1] 

机构地区：[1]宁夏大学数学与电算工程系,宁夏银川750021

出　　处：《厦门大学学报（自然科学版）》2003年第3期384-385,共2页Journal of Xiamen University：Natural Science

摘　　要：研究Baskakov算子导数的点态和整体定理,用Ditzian Totik光滑模刻画该算子导数的点态和整体定理.By means of DitzianTotik moduli of rorder, the local and global characterization theorems for the derivatives of the Baskakov operators are investigated.Both direct and converse theorems are obtained.

关 键 词：算子逼近 BASKAKOV算子 导数 点态 整体定理 DITZIAN-TOTIK光滑模 权函数 

分 类 号：O174.41[理学—数学]