西北师范大学学报(自然科学版)2012,Vol.48Issue(5):8-13,6.
一类和积分型混合算子在Lp空间的逼近性质
Approximation properties for certain mixed summation-integral type operators in the Lp spaces
摘要
Abstract
The mixed summation-integral type operators having Baskakov and Beta basis functions are studied. The direct, converse and equivalence theorems in the Lp(1≤p≤∞) spaces are obtained. Using the unified smooth modulus ωφλ (f, t) (O≤A≤1) , the pointwise approximation equivalence theorems are also gotten.关键词
Baskakov-Beta算子/Lp逼近/光滑模/k-泛函Key words
Baskakov-Beta operators/ Lp approximation/ smooth modulus/ k-functional分类
数理科学引用本文复制引用
齐秋兰,张玉平,董昌州..一类和积分型混合算子在Lp空间的逼近性质[J].西北师范大学学报(自然科学版),2012,48(5):8-13,6.基金项目
国家自然科学基金资助项目(10571040) (10571040)
河北省自然科学基金资助项目(A2012205028,A2012403013) (A2012205028,A2012403013)
河北师范大学重点基金资助项目(L2010Z02) (L2010Z02)