Density by Moduli and Lacunary Statistical Convergence

We have introduced and studied a new concept of f-lacunary statistical convergence, where f is an unbounded modulus. It is shown that, under certain conditions on a modulus f, the concepts of lacunary strong convergence with respect to a modulus f and f-lacunary statistical convergence are equivalen...

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Main Authors: Vinod K. Bhardwaj, Shweta Dhawan
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2016/9365037
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author Vinod K. Bhardwaj
Shweta Dhawan
author_facet Vinod K. Bhardwaj
Shweta Dhawan
author_sort Vinod K. Bhardwaj
collection DOAJ
description We have introduced and studied a new concept of f-lacunary statistical convergence, where f is an unbounded modulus. It is shown that, under certain conditions on a modulus f, the concepts of lacunary strong convergence with respect to a modulus f and f-lacunary statistical convergence are equivalent on bounded sequences. We further characterize those θ for which Sθf=Sf, where Sθf and Sf denote the sets of all f-lacunary statistically convergent sequences and f-statistically convergent sequences, respectively. A general description of inclusion between two arbitrary lacunary methods of f-statistical convergence is given. Finally, we give an Sθf-analog of the Cauchy criterion for convergence and a Tauberian theorem for Sθf-convergence is also proved.
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spelling doaj-art-d0971e6216124cbf912ac5381fa4d78e2025-08-20T03:19:37ZengWileyAbstract and Applied Analysis1085-33751687-04092016-01-01201610.1155/2016/93650379365037Density by Moduli and Lacunary Statistical ConvergenceVinod K. Bhardwaj0Shweta Dhawan1Department of Mathematics, Kurukshetra University, Kurukshetra 136119, IndiaDepartment of Mathematics, KVA DAV College for Women, Karnal 132001, IndiaWe have introduced and studied a new concept of f-lacunary statistical convergence, where f is an unbounded modulus. It is shown that, under certain conditions on a modulus f, the concepts of lacunary strong convergence with respect to a modulus f and f-lacunary statistical convergence are equivalent on bounded sequences. We further characterize those θ for which Sθf=Sf, where Sθf and Sf denote the sets of all f-lacunary statistically convergent sequences and f-statistically convergent sequences, respectively. A general description of inclusion between two arbitrary lacunary methods of f-statistical convergence is given. Finally, we give an Sθf-analog of the Cauchy criterion for convergence and a Tauberian theorem for Sθf-convergence is also proved.http://dx.doi.org/10.1155/2016/9365037
spellingShingle Vinod K. Bhardwaj
Shweta Dhawan
Density by Moduli and Lacunary Statistical Convergence
Abstract and Applied Analysis
title Density by Moduli and Lacunary Statistical Convergence
title_full Density by Moduli and Lacunary Statistical Convergence
title_fullStr Density by Moduli and Lacunary Statistical Convergence
title_full_unstemmed Density by Moduli and Lacunary Statistical Convergence
title_short Density by Moduli and Lacunary Statistical Convergence
title_sort density by moduli and lacunary statistical convergence
url http://dx.doi.org/10.1155/2016/9365037
work_keys_str_mv AT vinodkbhardwaj densitybymoduliandlacunarystatisticalconvergence
AT shwetadhawan densitybymoduliandlacunarystatisticalconvergence