Estimates of the uniform approximations by Zygmund sums on the classes of convolutions of periodic functions

A. S. Serdyuk, U. Z. Grabova

We obtain order-exact estimates for uniform approximations by using Zygmund sums $Z_n^s$ of classes $C_{\beta ,p}^{\psi }$ of $2\pi$-periodic continuous functions $f$ representable by convo…