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Gam ma算子导数拟中插式的逼近点态结果

Approximation by Left Quasi-interpolants of Derivatives of Gamma Operators
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摘要 为了得到更快的逼近速度,引入了某些著名算子的拟中插式.在前人研究的基础上,借助于Ditzian-Totick光滑模ω2rφλ(f,t)∞,给出了Gamma算子导数左拟中插式的逼近点态结果. Recently Müller introduced the left Gamma quasi-interpolants and obtainedan approximation equlvalence theorem with ωφ^2r(f,t)p Guo extended the results with ωφ^2rλ(f,t)∞.A approximation equivalence theorem is given with ωφ^2rλ(f,t)∞ which unified classical modulus and Ditzian-Totick modulus and improve the previous resluts.
作者 蒋红标 陈华
出处 《河北师范大学学报(自然科学版)》 CAS 北大核心 2007年第5期570-574,共5页 Journal of Hebei Normal University:Natural Science
基金 浙江省自然科学基金(102005) 浙江省重点学科基金(2005)
关键词 GAMMA算子 拟中插式 导数 光滑模 Gamma operator quasi-interpolants modulus of smoothness derivatives
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