Boundary Value Problems
Volume 2007 (2007), Article ID 76493, 12 pages
doi:10.1155/2007/76493
Positive solutions of boundary value problems for system of nonlinear fourth-order differential equations
Shengli Xie1
and Jiang Zhu2
1Department of Mathematics, Suzhou College, Suzhou 234000, China
2School of Mathematics Science, Xuzhou Normal University, Xuzhou 221116, China
Abstract
Some existence theorems of the positive solutions and the multiple positive solutions for singular and nonsingular systems of nonlinear fourth-order boundary value problems are proved by using topological degree theory and cone theory.