On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers

We prove that the semilinear elliptic equation −Δu=f(u), in Ω, u=0, on ∂Ω has a positive solution when the nonlinearity f belongs to a class which satisfies μtq≤f(t)≤Ctp at infinity and behaves like tq near the origin, where 1<q<(N+2)/(N−2) if N≥3 and 1<q<+∞ if N=1,2. In our approach, we...

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Main Authors: Claudianor O. Alves, Marco A. S. Souto
Format: Article
Language:English
Published: Hindawi Limited 2008-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2008/578417
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spelling doaj-312c1ce3baeb4d87980067dcaac7576b2020-11-24T23:09:04ZengHindawi LimitedAbstract and Applied Analysis1085-33751687-04092008-01-01200810.1155/2008/578417578417On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different PowersClaudianor O. Alves0Marco A. S. Souto1Departamento de Matemática e Estatística, Universidade Federal de Campina Grande, CEP 58.109-970, Campina Grande - PB, BrazilDepartamento de Matemática e Estatística, Universidade Federal de Campina Grande, CEP 58.109-970, Campina Grande - PB, BrazilWe prove that the semilinear elliptic equation −Δu=f(u), in Ω, u=0, on ∂Ω has a positive solution when the nonlinearity f belongs to a class which satisfies μtq≤f(t)≤Ctp at infinity and behaves like tq near the origin, where 1<q<(N+2)/(N−2) if N≥3 and 1<q<+∞ if N=1,2. In our approach, we do not need the Ambrosetti-Rabinowitz condition, and the nonlinearity does not satisfy any hypotheses such those required by the blowup method. Furthermore, we do not impose any restriction on the growth of p.http://dx.doi.org/10.1155/2008/578417
collection DOAJ
language English
format Article
sources DOAJ
author Claudianor O. Alves
Marco A. S. Souto
spellingShingle Claudianor O. Alves
Marco A. S. Souto
On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
Abstract and Applied Analysis
author_facet Claudianor O. Alves
Marco A. S. Souto
author_sort Claudianor O. Alves
title On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
title_short On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
title_full On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
title_fullStr On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
title_full_unstemmed On Existence of Solution for a Class of Semilinear Elliptic Equations with Nonlinearities That Lies between Different Powers
title_sort on existence of solution for a class of semilinear elliptic equations with nonlinearities that lies between different powers
publisher Hindawi Limited
series Abstract and Applied Analysis
issn 1085-3375
1687-0409
publishDate 2008-01-01
description We prove that the semilinear elliptic equation −Δu=f(u), in Ω, u=0, on ∂Ω has a positive solution when the nonlinearity f belongs to a class which satisfies μtq≤f(t)≤Ctp at infinity and behaves like tq near the origin, where 1<q<(N+2)/(N−2) if N≥3 and 1<q<+∞ if N=1,2. In our approach, we do not need the Ambrosetti-Rabinowitz condition, and the nonlinearity does not satisfy any hypotheses such those required by the blowup method. Furthermore, we do not impose any restriction on the growth of p.
url http://dx.doi.org/10.1155/2008/578417
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