摘要
讨论函数Fourier-Jacobi展开的delaValée-Pousin平均的性质,建立了delaValée-Pousin平均与最佳多项式逼近间的强型和弱型不等式.
Approximation behavior of the de la Vallée Poussin means for Fourier Jacobi expansions is discussed. The strong and weak type inequalities for this means and the best approximation are established.
出处
《宁夏大学学报(自然科学版)》
CAS
1997年第3期220-222,共3页
Journal of Ningxia University(Natural Science Edition)
关键词
最佳逼近
F-J级数
V-P平均
Fourier Jacobi series
de la Vallée Poussin means
best approximation