Multiple Positive Solutions for BVP of a Singular Fourth Order System
一类奇异四阶方程组边值问题的多重正解

In this paper, the authors study the existence and multiplicity of two point BVP for a singular nonlinear fourth order ordinary differential system by using the fixed-point index theory. The existence and multiplicity theorems on positive solutions are established by using the first eigenvalue of the corresponding linear problems.