摘要
先给出了以第二类Ｔｃｈｅｂｙｃｈｅｆ多项式的零点为插值结点组的Ｇｒｕｎｗａｌｄ插值多项式于Ｌ１下的收敛速度，然后给出了一种修改的Ｇｒｕｎｗａｌｄ插值多项式及其于Ｌ１下的收敛速度．
This paper first gives the rate of L 1 Convergence of the Grnwald interpolatory based on the Chebycheff nodes of the second kinds, then gives a kind of quasi Grnwald and its rate of L 1 Convergence.
出处
《纯粹数学与应用数学》
CSCD
1998年第3期55-59,共5页
Pure and Applied Mathematics
关键词
插值多项式
L1收敛速度
G插值算子
Tchebycheff polynomials
Grnwald interpolatory process
quasi Grnwald interpolatory process
moduli of smoothness
