摘要
引入一类正则的Ｆｏｕｒｉｅｒ级数及其导级数的求和法，并得到了相应的求和定理、饱和类定理及逼近定理，同时改进并推广了［１］的求和定理，修正了［１］的饱和类定理。
In this paper, the writers introduce the summation of a regular Fourierseries and its differentiable series, and obtain correspondent summation theorem,saturation theorem and approximation theorem. Moreover, the summation theoremin [1] is improved and extended and its saturation theorem is also corrected.
