Positive Solutions of Boundary Value Problems for System of Nonlinear Fourth-Order Differential Equations
1 Department of Mathematics, Suzhou College, Suzhou 234000, China
2 School of Mathematics Science, Xuzhou Normal University, Xuzhou 221116, China
Boundary Value Problems 2007, 2007:076493 doi:10.1155/2007/76493Published: 30 January 2007
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.