用Tchebycheff-Fourier级数的(F,α)平均逼近函数类Lipβ的误差

On the Error of Approximation of Classes Lipβ by (F,α) Means of Tchebycheff-Fourier Series

本文考虑用Tchebycheff-Fourier级数的（F，α）平均逼近函数f∈C[-1，1］，在f∈lipβ时得到了误差的表达式，较大地改进了文[1]中的有关结果．

In this paper we consider the approximation of f ∈ C [- 1, 1] by (F,α)means of Tchebycheff-Fourier Series. Mainly. the expressions of error of approximation are obtained when f ∈lipβ. The similar result of Sheng [1] has been improved.