Approximation of functions by superimposing of de la Vallée Poussin mean into deferred matrix mean of their Fourier series in Hölder metric with weight

Abstract

In this paper, we introduce a superimposing of de la Vallée Poussin means into deferred matrix means of Fourier series to determine the degree of approximation of functions belonging to $W(L^p, \gamma, \xi)$ space.