An analysis of the convergence problem of a function in Sobolev and generalized Zygmund norms using product operator

Abstract In this paper, we delve into the convergence challenges concerning a function f represented as a Fourier series within Sobolev and generalized Zygmund norms. Our approach involves utilizing the deferred Nörlund–deferred Cesàro product ( D h μ d μ ( N p , q ) D g μ h μ ( C ) $D_{h_{\mu}}^{d_...

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Bibliographic Details
Main Authors: H. K. Nigam, Swagata Nandy
Format: Article
Language:English
Published: SpringerOpen 2025-03-01
Series:Journal of Inequalities and Applications
Subjects:
Online Access:https://doi.org/10.1186/s13660-025-03284-9
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Summary:Abstract In this paper, we delve into the convergence challenges concerning a function f represented as a Fourier series within Sobolev and generalized Zygmund norms. Our approach involves utilizing the deferred Nörlund–deferred Cesàro product ( D h μ d μ ( N p , q ) D g μ h μ ( C ) $D_{h_{\mu}}^{d_{ \mu}}(N^{p,q})D_{g_{\mu}}^{h_{\mu}}(C)$ ) means of Fourier series in order to examine this convergence phenomenon. Further, we conduct a comparative analysis of the convergence outcomes through practical validations.
ISSN:1029-242X