Jian Liu, Zengqin Zhao
In this article, we study the second-order three-point boundary-value problem
where , , and is allowed to change sign. We show that there exist two positive solutions by using Leggett-Williams fixed-point theorem.
Submitted March 14, 2012. Published September 7, 2012.
Math Subject Classifications: 34B15, 34B25.
Key Words: Multiple positive solutions; sign changing; fixed-point theorem.
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| Jian Liu |
School of Mathematics and Quantitative Economics
Shandong University of Finance and Economics
Jinan, Shandong, 250014, China
|Zengqin Zhao |
School of Mathematical Sciences
Qufu Normal University, Qufu
Shandong, 273165, China
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