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Ma, R. and Wang, H. (1995) On the Existence of Positive Solutions of Fourth-Order Ordinary Differential Equations. Applicable Analysis, 59, 225-231.
https://doi.org/10.1080/00036819508840401

has been cited by the following article:

• TITLE: Positive Solution for a Singular Fourth-Order Differential System

  AUTHORS: B. Kovács

  KEYWORDS: Positive Solutions, Fixed Point Theorem, Singular Solutions, Bending of an Elastic Beam, Cone, Boundary Value Problem, Existence, Multiplicity

  JOURNAL NAME: Journal of Applied Mathematics and Physics, Vol.9 No.9, September 15, 2021

  ABSTRACT: In this paper, we investigate the existence of positive solutions for the singular fourth-order differential system u(4) = φu + f (t, u, u”, φ), 0 t φ” = μg (t, u, u”), 0 t u (0) = u (1) = u”(0) = u”(1) = 0, φ (0) = φ (1) = 0; where μ > 0 is a constant, and the nonlinear terms f, g may be singular with respect to both the time and space variables. The results obtained herein generalize and improve some known results including singular and non-singular cases.