【摘要】 本文利用带权情形Ditzian Totik无滑模与对应的K 泛函的等价Lp 度量中给出了Γ算子线性组合导数的全局逼近的特征刻画 .本文的结果实质性的推广了文 [3]中的主要结果更多还原

【Abstract】 We give a characterization of the global approximation of derivatives f (l) by linear combinations of Γ-operators G (l) n,r in weighted L p-norm by using of the equivalence between the weighted Ditzian-Totik modulus of smoothness and the weighted Ditzian-Totik K-functional. The result given in this paper really extends the result obtained in .更多还原