摘要
本文借助[3]所引入的半范与相应的τ-模建立Stancu算子对■可积函数■近的正定理。
In this paper, the approximation by Stancu operators in the space of Riemann integrable functions are studied. The following results is obtained:Theorem If f∈R[0, 1], then‖P_(n,s)f-f‖_(1/n)≤M_τ(f, n^(-1/2))_1,‖P_(n,s)f-f‖(?)≤M_τ(f,n^(-1/2).
出处
《宁夏大学学报（自然科学版）》
CAS
1990年第4期1-8,共8页
Journal of Ningxia University(Natural Science Edition)
关键词
STANCU算子
黎曼可积函数
逼近
Stancu operator, Riemann integrable function, direct theorem, modulus of continuity.
