Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations

We derive necessary and sufficient conditions for (some or all) positive solutions of the half-linear q-difference equation Dq(Φ(Dqy(t)))+p(t)Φ(y(qt))=0, t∈{qk:k∈N0} with q>1, Φ(u)=|u|α−1sgn⁡u with α>1, to behave like q-regularly varying or...

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Main Author: Pavel Řehák
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2011/986343
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author Pavel Řehák
author_facet Pavel Řehák
author_sort Pavel Řehák
collection DOAJ
description We derive necessary and sufficient conditions for (some or all) positive solutions of the half-linear q-difference equation Dq(Φ(Dqy(t)))+p(t)Φ(y(qt))=0, t∈{qk:k∈N0} with q>1, Φ(u)=|u|α−1sgn⁡u with α>1, to behave like q-regularly varying or q-rapidly varying or q-regularly bounded functions (that is, the functions y, for which a special limit behavior of y(qt)/y(t) as t→∞ is prescribed). A thorough discussion on such an asymptotic behavior of solutions is provided. Related Kneser type criteria are presented.
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institution Kabale University
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series Abstract and Applied Analysis
spelling doaj-art-3990dcc813d14100b0265b30429f80d92025-02-03T06:11:20ZengWileyAbstract and Applied Analysis1085-33751687-04092011-01-01201110.1155/2011/986343986343Asymptotic Behavior of Solutions to Half-Linear q-Difference EquationsPavel Řehák0Institute of Mathematics, Academy of Sciences of the Czech Republic, Žižkova 22, 61662 Brno, Czech RepublicWe derive necessary and sufficient conditions for (some or all) positive solutions of the half-linear q-difference equation Dq(Φ(Dqy(t)))+p(t)Φ(y(qt))=0, t∈{qk:k∈N0} with q>1, Φ(u)=|u|α−1sgn⁡u with α>1, to behave like q-regularly varying or q-rapidly varying or q-regularly bounded functions (that is, the functions y, for which a special limit behavior of y(qt)/y(t) as t→∞ is prescribed). A thorough discussion on such an asymptotic behavior of solutions is provided. Related Kneser type criteria are presented.http://dx.doi.org/10.1155/2011/986343
spellingShingle Pavel Řehák
Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
Abstract and Applied Analysis
title Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
title_full Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
title_fullStr Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
title_full_unstemmed Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
title_short Asymptotic Behavior of Solutions to Half-Linear q-Difference Equations
title_sort asymptotic behavior of solutions to half linear q difference equations
url http://dx.doi.org/10.1155/2011/986343
work_keys_str_mv AT pavelrehak asymptoticbehaviorofsolutionstohalflinearqdifferenceequations