p-вариационный модуль непрерывности

Approximation of Bounded p-variation Periodic Functions by Generalized Abel–Poisson and Logarithmic Means

An asymptotic estimate of approximation by generalized Abel–Poisson means in p-variation metric on the class of functions with given majorant of p-variational best approximation is proved. Several other quantity results on approximation by these means are
obtained.