Approximation by sub-matrix means of multiple Fourier series in the Hölder metric Page 1
Palestine Journal of Mathematics Vol. 9(2)(2020) , 761–770 © Palestine Polytechnic …

In this study, we obtain some results related to trigonometric approximation using matrix
submethods of Fourier series of functions in the variable exponent weighted Lebesgue …

Abstract Using the Mean Rest Bounded Variation Sequences or the Mean Head Bounded
Variation Sequences, we have proved four theorems pertaining to the degree of …

SADULLA Z. JAFAROV Abstract. In this work, the approximation properties of the matrix
submethods in weighted Orlicz spaces with Muckenhoupt weights are studied. We obtain …

ON THE TRIGONOMETRIC APPROXIMATION OF FUNCTIONS IN WEIGHTED LORENTZ
SPACES USING CES`ARO SUBMETHOD 1. Introduction Page 1 Novi Sad J. Math. Vol. 48, No. 2 …

Bu tez çalışmasında bazı fonksiyon uzaylarında Fourier serilerinin kısmi toplamlarının bazı
alt toplanabilme metotları ile yaklaşım sonuçları incelenmiştir. Ağırlıklı Lorentz, değişken …

In this paper, the authors have obtained L_1 L 1-approximations of functions f in\, Lip\,(α, 1)
Lip (α, 1)(0< α ≤ 1)(0< α≤ 1) by trigonometrical polynomials N_n (f; x) N n (f; x) whenever …

Some results on approximation of periodic functions are extended in two directions:
Improving the degree of approximation of periodic functions by sub-matrix means of its …

In this study, we obtain the degree of approximation by the Norlund and Riesz submethods
of the partial sums of the Fourier series of derivatives of functions in the weighted Lorentz …

In this paper, for the first time, we introduce the deferred matrix means which contain the well-
known generalized deferred Nörlund, deferred Nörlund, deferred Riesz, deferred Cesàro …