摘要
研究Bernstein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特征 ,得到了等价刻画定理 .
By means of Ditzian Totik moduli ω r φ λ (f,t) of r order, where r ∈N,0≤ λ ≤1, the local and global characterization theorems for the derivatives of the Bernstein operators are investigated.Both direct and converse theorems are obtained.These results bridge the gap between the pointwise and global conclusions.
出处
《宁夏大学学报（自然科学版）》
CAS
2001年第3期276-279,共4页
Journal of Ningxia University(Natural Science Edition)
基金
宁夏大学科学研究基金资助项目 (0 0 2 10 2 )
