Results 21 to 30 of about 1,208 (295)
Four dimensional matrix mappings and applications
Kuwait Journal of Science, 2023 In this paper, we characterize the classes (L,Lk), (Lk,L) and (L∞,Lk), 1 ≤ k < ∞, of all four dimentional infinite matrices, where Lk and L∞ are the spaces of all absolutely k-summable and bounded double sequences, respectively. Using them, we establish
Mehmet Ali Sarigol
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A new note on factored infinite series and trigonometric Fourier series
Comptes Rendus. Mathématique, 2021 In this paper, we have proved two main theorems under more weaker conditions dealing with absolute weighted arithmetic mean summability factors of infinite series and trigonometric Fourier series.
Bor, Hüseyin
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Generalized linear methods and convergence acceleration
Mathematical Modelling and Analysis, 2003 Several λ‐boundedness propositions for generalized linear methods A = (Ank ), while Ank are specially fixed linear bounded operators from Banach space X into X, are presented.
I. Tammeraid
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Two Absolute Index-Summability Methods [PDF]
, 2016 In this paper we have established a relation between the Summability methods ...
Misra, U.K +4 more
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Convergence acceleration and linear methods
Mathematical Modelling and Analysis, 2003 Two λ‐convergence propositions for linear methods A = (Ank ), while Ank are linear bounded operators from Banach space X into Banach space Y, are presented. These results are applied to study convergence acceleration of linear methods.
I. Tammeraid
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On application of matrix summability to Fourier series [PDF]
, 2017 WOS: 000427318700016Bor has recently obtained amain theorem dealing with absolute weighted mean summability of Fourier series. In this paper, we generalized that theorem for vertical bar A, theta(n)vertical bar k summability method.
Yildiz, Sebnem, Sebnem Yildiz
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Comparison of speeds of convergence in Riesz-type families of summability methods; pp. 70–80 [PDF]
Proceedings of the Estonian Academy of Sciences, 2008 We deal with Riesz-type families (see Proc. Estonian Acad. Sci. Phys. Math., 2002, 51, 18â34 and Acta Sci. Math. (Szeged), 2004, 70, 639â657) of summability methods Aα for converging functions and sequences.
Anna Šeletski, Anne Tali
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On Products of Summability Methods [PDF]
Proceedings of the American Mathematical Society, 1952 1. At the recent International Congress I. M. Sheffer asked me the following question: Given a sequence {IS, }; form the sequence {an } of the Cesaro means of order a (a > 0) corresponding to { S, } . If S } is summable Abel, is it true that {a"} is also summable Abel? A more general question is: Suppose that A and B are two regular summability methods
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A Link between Approximation Theory and Summability Methods via Four-Dimensional Infinite Matrices
Mathematics, 2021 In this study, we present a link between approximation theory and summability methods by constructing bivariate Bernstein-Kantorovich type operators on an extended domain with reparametrized knots.
Hari M. Srivastava +3 more
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Summability Factors for Cesaro Methods [PDF]
Proceedings of the American Mathematical Society, 1979 It is shown that if each of r and s is a nonnegative integer and {
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