A Further Study of Almost Periodic Time Scales with Some Notes and Applications

We introduce three equivalent concepts of almost periodic time scales as a further study of the corresponding concept proposed in Li and Wang (2011) and several examples of almost periodic time scales which are not periodic are provided. Furthermore, the concepts of almost periodic functions are red...

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Main Authors: Chao Wang, Ravi P. Agarwal
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2014/267384
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author Chao Wang
Ravi P. Agarwal
author_facet Chao Wang
Ravi P. Agarwal
author_sort Chao Wang
collection DOAJ
description We introduce three equivalent concepts of almost periodic time scales as a further study of the corresponding concept proposed in Li and Wang (2011) and several examples of almost periodic time scales which are not periodic are provided. Furthermore, the concepts of almost periodic functions are redefined under the sense of this new timescale concept. Finally, almost periodicity of Cauchy matrix for dynamic equations is proved under these new definitions. Based on these results, the existence of almost periodic solutions to a class of nonlinear dynamic equations is investigated by the almost periodicity of Cauchy matrix on almost periodic time scales. Besides, as an application, we apply our results to a class of high-order Hopfield neural networks.
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spelling doaj-art-cc1fc91e10d94ffca132428d6aa5abc62025-08-20T03:19:29ZengWileyAbstract and Applied Analysis1085-33751687-04092014-01-01201410.1155/2014/267384267384A Further Study of Almost Periodic Time Scales with Some Notes and ApplicationsChao Wang0Ravi P. Agarwal1Department of Mathematics, Yunnan University, Kunming, Yunnan 650091, ChinaDepartment of Mathematics, Texas A&M University-Kingsville, Kingsville, TX 78363-8202, USAWe introduce three equivalent concepts of almost periodic time scales as a further study of the corresponding concept proposed in Li and Wang (2011) and several examples of almost periodic time scales which are not periodic are provided. Furthermore, the concepts of almost periodic functions are redefined under the sense of this new timescale concept. Finally, almost periodicity of Cauchy matrix for dynamic equations is proved under these new definitions. Based on these results, the existence of almost periodic solutions to a class of nonlinear dynamic equations is investigated by the almost periodicity of Cauchy matrix on almost periodic time scales. Besides, as an application, we apply our results to a class of high-order Hopfield neural networks.http://dx.doi.org/10.1155/2014/267384
spellingShingle Chao Wang
Ravi P. Agarwal
A Further Study of Almost Periodic Time Scales with Some Notes and Applications
Abstract and Applied Analysis
title A Further Study of Almost Periodic Time Scales with Some Notes and Applications
title_full A Further Study of Almost Periodic Time Scales with Some Notes and Applications
title_fullStr A Further Study of Almost Periodic Time Scales with Some Notes and Applications
title_full_unstemmed A Further Study of Almost Periodic Time Scales with Some Notes and Applications
title_short A Further Study of Almost Periodic Time Scales with Some Notes and Applications
title_sort further study of almost periodic time scales with some notes and applications
url http://dx.doi.org/10.1155/2014/267384
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