Scientific Bulletin of the ''Petru Maior" University of Tîrgu Mureș (Jun 2015)
Existence of Positive Solution for a Fourth-order Differential System with Variable Coefficients
Abstract
This paper investigates the existence of positive solutions for a fourth-order differential system using a fixed point theorem of cone expansion and compression type. The two main results give sufficient conditions to insure at least one and at least two positive solutions, respectively