Degree of approximation in the generalized Lipschitz class via (E, q)a- product summability means of fourier series

Abstract

Dealing with degree of approximation of Fourier series of functions of Lipchitz classes, some results have been established by Nigam [15] and Misra et al. [17]. In this paper, we have established a new theorem based on (E, q)A- product summability mean in order to estimate the degree of approximation of a function f ? Lip(?(t), r).