Boundary Value Problems
Volume 2010 (2010), Article ID 376471, 14 pages
Research Article

Triple Positive Solutions for a Type of Second-Order Singular Boundary Problems

1Department of Mathematics, Northwest Normal University, Lanzhou 730070, China
2The School of Mathematics, Physics Software Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received 7 April 2010; Accepted 26 August 2010

Academic Editor: Wenming Zou

Copyright © 2010 Jiemei Li and Jinxiang Wang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with the existence of triple positive solutions for a type of second-order singular boundary problems with general differential operators. By using the Leggett-Williams fixed point theorem, we establish an existence criterion for at least three positive solutions with suitable growth conditions imposed on the nonlinear term.