The Strong Approximation of Functions by Fourier-Vilenkin Series in Uniform and H?lder Metrics

We will study the strong approximation by Fourier-Vilenkin series using matrices with some general monotone condition. The strong Vallee-Poussin, which means of Fourier-Vilenkin series are also investigated.

非中心差商收敛性与可导性

引入非中心差商极限概念 ,讨论了非中心差商极限存在与可导的关系 。