A Study on Degree of Approximation by Product Means of the Fourier Series in a W (L^r, ξ(t))( r ≥ 1) Class

Abstract

The purpose of present paper is to approach a new result on degree of approximation of Fourier series of a function f ∈ W (Lr, ξ(t)) class by C2Tn product summability. So many work have been done for approximation of Fourier series and its conjugate series but this work is yet not seen for (C2Tn) product summability.