Generalized Almost Convergence and Core Theorems of Double Sequences

The idea of [λ, μ]-almost convergence (briefly, F[λ, μ]-convergence) has been recently introduced and studied by Mohiuddine and Alotaibi (2014). In this paper first we define a norm on F[λ, μ] such that it is a Banach space and then we define and characterize those four-dimensional matrices which tr...

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Main Authors: S. A. Mohiuddine, Abdullah Alotaibi
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2014/152910
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author S. A. Mohiuddine
Abdullah Alotaibi
author_facet S. A. Mohiuddine
Abdullah Alotaibi
author_sort S. A. Mohiuddine
collection DOAJ
description The idea of [λ, μ]-almost convergence (briefly, F[λ, μ]-convergence) has been recently introduced and studied by Mohiuddine and Alotaibi (2014). In this paper first we define a norm on F[λ, μ] such that it is a Banach space and then we define and characterize those four-dimensional matrices which transform F[λ, μ]-convergence of double sequences x=(xjk) into F[λ, μ]-convergence. We also define a F[λ, μ]-core of x=(xjk) and determine a Tauberian condition for core inclusions and core equivalence.
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series Abstract and Applied Analysis
spelling doaj-art-9a2eaef416aa413889bd4adaac6ca6622025-08-20T03:36:53ZengWileyAbstract and Applied Analysis1085-33751687-04092014-01-01201410.1155/2014/152910152910Generalized Almost Convergence and Core Theorems of Double SequencesS. A. Mohiuddine0Abdullah Alotaibi1Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaDepartment of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi ArabiaThe idea of [λ, μ]-almost convergence (briefly, F[λ, μ]-convergence) has been recently introduced and studied by Mohiuddine and Alotaibi (2014). In this paper first we define a norm on F[λ, μ] such that it is a Banach space and then we define and characterize those four-dimensional matrices which transform F[λ, μ]-convergence of double sequences x=(xjk) into F[λ, μ]-convergence. We also define a F[λ, μ]-core of x=(xjk) and determine a Tauberian condition for core inclusions and core equivalence.http://dx.doi.org/10.1155/2014/152910
spellingShingle S. A. Mohiuddine
Abdullah Alotaibi
Generalized Almost Convergence and Core Theorems of Double Sequences
Abstract and Applied Analysis
title Generalized Almost Convergence and Core Theorems of Double Sequences
title_full Generalized Almost Convergence and Core Theorems of Double Sequences
title_fullStr Generalized Almost Convergence and Core Theorems of Double Sequences
title_full_unstemmed Generalized Almost Convergence and Core Theorems of Double Sequences
title_short Generalized Almost Convergence and Core Theorems of Double Sequences
title_sort generalized almost convergence and core theorems of double sequences
url http://dx.doi.org/10.1155/2014/152910
work_keys_str_mv AT samohiuddine generalizedalmostconvergenceandcoretheoremsofdoublesequences
AT abdullahalotaibi generalizedalmostconvergenceandcoretheoremsofdoublesequences