利用光滑模ωφ2λr(f,t)讨论Baskakov算子Vn的迭代布尔和 rV的逼近性质,得到了当1-1/r〈λ≤1时的正定理及等价定理.
The aim is to discuss approximate qualities for the iterated Boolean sums of ■rVn of Baskakov operators Vn by the help of moduli of smoothness ω2rφλ(f,t) .Direct and equivalent theorems are obtained for 1-1rλ≤1.