## DEGREE OF APPROXIMATION IN THE GENERALIZED LIPSCHITZ CLASS VIA (E; q)A- PRODUCT SUMMABILITY MEANS OF FOURIER SERIES

## DEGREE OF APPROXIMATION IN THE GENERALIZED LIPSCHITZ CLASS VIA (E; q)A- PRODUCT SUMMABILITY MEANS OF FOURIER SERIES

*A. A. Das, S. K. Paikray, P. Parida, U. K. Misra *

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## 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 2 Lip((t); r).

## Keywords

(E; q)A- product summability mean, Lipchitz classes, degree of approximation, Fourier series.