The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions

This paper presents a method to obtain lower and upper bounds for the minimum distance between points a and b of the solution of the second order linear differential equation y′′+q(x)y=0 satisfying general separated boundary conditions of the type a11y(a)+a12y′(a)=0 and a21y(b)+a22y′(b)=0. The metho...

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Main Authors: Pedro Almenar, Lucas Jódar
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2014/126713
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author Pedro Almenar
Lucas Jódar
author_facet Pedro Almenar
Lucas Jódar
author_sort Pedro Almenar
collection DOAJ
description This paper presents a method to obtain lower and upper bounds for the minimum distance between points a and b of the solution of the second order linear differential equation y′′+q(x)y=0 satisfying general separated boundary conditions of the type a11y(a)+a12y′(a)=0 and a21y(b)+a22y′(b)=0. The method is based on the recursive application of a linear operator to certain functions, a recursive application that makes these bounds converge to the exact distance between a and b as the recursivity index grows. The method covers conjugacy and disfocality as particular cases.
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institution Kabale University
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publishDate 2014-01-01
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spelling doaj-art-ffd75ae8571941c6aad9b2a392c68a422025-02-03T05:47:14ZengWileyAbstract and Applied Analysis1085-33751687-04092014-01-01201410.1155/2014/126713126713The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary ConditionsPedro Almenar0Lucas Jódar1Vodafone Central Network and Operations, P. E. Castellana Norte, 28050 Madrid, SpainInstituto Universitario de Matemática Multidisciplinar, Universitat Politècnica de València, Camino de Vera S/N, 46022 Valencia, SpainThis paper presents a method to obtain lower and upper bounds for the minimum distance between points a and b of the solution of the second order linear differential equation y′′+q(x)y=0 satisfying general separated boundary conditions of the type a11y(a)+a12y′(a)=0 and a21y(b)+a22y′(b)=0. The method is based on the recursive application of a linear operator to certain functions, a recursive application that makes these bounds converge to the exact distance between a and b as the recursivity index grows. The method covers conjugacy and disfocality as particular cases.http://dx.doi.org/10.1155/2014/126713
spellingShingle Pedro Almenar
Lucas Jódar
The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
Abstract and Applied Analysis
title The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
title_full The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
title_fullStr The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
title_full_unstemmed The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
title_short The Distance between Points of a Solution of a Second Order Linear Differential Equation Satisfying General Boundary Conditions
title_sort distance between points of a solution of a second order linear differential equation satisfying general boundary conditions
url http://dx.doi.org/10.1155/2014/126713
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