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HIGHER ORDER MULTI-POINT BOUNDARY VALUE PROBLEMS WITH SIGN-CHANGING NONLINEARITIES AND NONHOMOGENEOUS BOUNDARY CONDITIONS

  • J. R. Graef*
  • , Lingju Kong
  • , Qingshan Kong
  • , James S. W. Wong
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

13 Downloads (CityUHK Scholars)

Abstract

We study classes of nth order boundary value problems consisting of an equation having a sign-changing nonlinearity f(t, x) together with several different sets of nonhomogeneous multi-point boundary conditions. Criteria are established for the existence of nontrivial solutions, positive solutions, and negative solutions of the problems under consideration. Conditions are determined by the behavior of f(t, x)/x near 0 and +/-infinity when compared to the smallest positive characteristic values of some associated linear integral operators. This work improves and extends a number of recent results in the literature on this topic. The results are illustrated with examples.

Original languageEnglish
Pages (from-to)1-40
JournalElectronic Journal of Qualitative Theory of Differential Equations
Issue number28
DOIs
Publication statusPublished - 2010

Research Keywords

  • Nontrivial solutions
  • boundary value problems
  • nonhomogeneous boundary conditions
  • Leray-Schauder degree
  • Krein-Rutman theorem
  • 2ND-ORDER DIFFERENTIAL-EQUATIONS
  • SYMMETRIC POSITIVE SOLUTIONS
  • OPTIMAL EXISTENCE CRITERIA
  • NONTRIVIAL SOLUTIONS

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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