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has been cited by the following article:

• TITLE: Study on the Existence of Sign-Changing Solutions of Case Theory Based a Class of Differential Equations Boundary-Value Problems

  AUTHORS: Hongwei Ji

  KEYWORDS: Case Theory, Boundary-Value Problems, Fixed Point Theorem, Sign-Changing Solutions

  JOURNAL NAME: Advances in Pure Mathematics, Vol.7 No.12, December 21, 2017

  ABSTRACT: By using the fixed point theorem under the case structure, we study the existence of sign-changing solutions of A class of second-order differential equations three-point boundary-value problems, and a positive solution and a negative solution are obtained respectively, so as to popularize and improve some results that have been known.