On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems

We consider the boundary value problem −u″(x)=λf(u(x)), x∈(0,1); u′(0)=0; u′(1)+αu(1)=0, where α>0, λ>0 are parameters and f∈c2[0,∞) such that f(0)<0. In this paper, we study for the two cases ρ=0 and ρ=θ (ρ is the value of the solution at x=0 and θ is such that F(θ)=0 where F(s)=∫0sf(t)dt...

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Main Authors: G. A. Afrouzi, M. Khaleghy Moghaddam
Format: Article
Language:English
Published: Wiley 2002-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Online Access:http://dx.doi.org/10.1155/S0161171202109276
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author G. A. Afrouzi
M. Khaleghy Moghaddam
author_facet G. A. Afrouzi
M. Khaleghy Moghaddam
author_sort G. A. Afrouzi
collection DOAJ
description We consider the boundary value problem −u″(x)=λf(u(x)), x∈(0,1); u′(0)=0; u′(1)+αu(1)=0, where α>0, λ>0 are parameters and f∈c2[0,∞) such that f(0)<0. In this paper, we study for the two cases ρ=0 and ρ=θ (ρ is the value of the solution at x=0 and θ is such that F(θ)=0 where F(s)=∫0sf(t)dt) the relation between λ and the number of interior critical points of the nonnegative solutions of the above system.
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series International Journal of Mathematics and Mathematical Sciences
spelling doaj-art-bac24d2a57584b70bb841d2a0eb98f382025-02-03T07:25:54ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252002-01-01311275176010.1155/S0161171202109276On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problemsG. A. Afrouzi0M. Khaleghy Moghaddam1Department of Mathematics, Faculty of Basic Sciences, Mazandaran University, Babolsar, IranDepartment of Mathematics, Faculty of Basic Sciences, Mazandaran University, Babolsar, IranWe consider the boundary value problem −u″(x)=λf(u(x)), x∈(0,1); u′(0)=0; u′(1)+αu(1)=0, where α>0, λ>0 are parameters and f∈c2[0,∞) such that f(0)<0. In this paper, we study for the two cases ρ=0 and ρ=θ (ρ is the value of the solution at x=0 and θ is such that F(θ)=0 where F(s)=∫0sf(t)dt) the relation between λ and the number of interior critical points of the nonnegative solutions of the above system.http://dx.doi.org/10.1155/S0161171202109276
spellingShingle G. A. Afrouzi
M. Khaleghy Moghaddam
On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
International Journal of Mathematics and Mathematical Sciences
title On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
title_full On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
title_fullStr On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
title_full_unstemmed On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
title_short On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
title_sort on the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems
url http://dx.doi.org/10.1155/S0161171202109276
work_keys_str_mv AT gaafrouzi ontherelationbetweeninteriorcriticalpointsofpositivesolutionsandparametersforaclassofnonlinearboundaryvalueproblems
AT mkhaleghymoghaddam ontherelationbetweeninteriorcriticalpointsofpositivesolutionsandparametersforaclassofnonlinearboundaryvalueproblems