On a higher-order evolution equation with a Stepanov-bounded solution

We study strong solutions u:ℝ→X, a Banach space X, of the nth-order evolution equation u(n)−Au(n−1)=f, an infinitesimal generator of a strongly continuous group A:D(A)⊆X→X, and a given forcing term f:ℝ→X. It is shown that if X is reflexive, u and u(n−1) are Stepanov-bounded, and f is Stepanov almost...

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Main Author: Aribindi Satyanarayan Rao
Format: Article
Language:English
Published: Hindawi Limited 2004-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/S0161171204306277
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spelling doaj-e9c4ac1ec76445f8b89e3b14ca27848c2020-11-24T21:39:12ZengHindawi LimitedInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252004-01-012004723959396410.1155/S0161171204306277On a higher-order evolution equation with a Stepanov-bounded solutionAribindi Satyanarayan Rao0Department of Computer Science, Vanier College, 821 Avenue Ste Croix, St. Laurent H4L 3X9, Quebec, CanadaWe study strong solutions u:ℝ→X, a Banach space X, of the nth-order evolution equation u(n)−Au(n−1)=f, an infinitesimal generator of a strongly continuous group A:D(A)⊆X→X, and a given forcing term f:ℝ→X. It is shown that if X is reflexive, u and u(n−1) are Stepanov-bounded, and f is Stepanov almost periodic, then u and all derivatives u′,…,u(n−1) are strongly almost periodic. In the case of a general Banach space X, a corresponding result is obtained, proving weak almost periodicity of u, u′,…,u(n−1).http://dx.doi.org/10.1155/S0161171204306277
collection DOAJ
language English
format Article
sources DOAJ
author Aribindi Satyanarayan Rao
spellingShingle Aribindi Satyanarayan Rao
On a higher-order evolution equation with a Stepanov-bounded solution
International Journal of Mathematics and Mathematical Sciences
author_facet Aribindi Satyanarayan Rao
author_sort Aribindi Satyanarayan Rao
title On a higher-order evolution equation with a Stepanov-bounded solution
title_short On a higher-order evolution equation with a Stepanov-bounded solution
title_full On a higher-order evolution equation with a Stepanov-bounded solution
title_fullStr On a higher-order evolution equation with a Stepanov-bounded solution
title_full_unstemmed On a higher-order evolution equation with a Stepanov-bounded solution
title_sort on a higher-order evolution equation with a stepanov-bounded solution
publisher Hindawi Limited
series International Journal of Mathematics and Mathematical Sciences
issn 0161-1712
1687-0425
publishDate 2004-01-01
description We study strong solutions u:ℝ→X, a Banach space X, of the nth-order evolution equation u(n)−Au(n−1)=f, an infinitesimal generator of a strongly continuous group A:D(A)⊆X→X, and a given forcing term f:ℝ→X. It is shown that if X is reflexive, u and u(n−1) are Stepanov-bounded, and f is Stepanov almost periodic, then u and all derivatives u′,…,u(n−1) are strongly almost periodic. In the case of a general Banach space X, a corresponding result is obtained, proving weak almost periodicity of u, u′,…,u(n−1).
url http://dx.doi.org/10.1155/S0161171204306277
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