Shouliang Xi, Mei Jia, Huipeng Ji
Abstract:
In this paper, we study the existence of multiple nonnegative
solutions for second-order boundary-value problems of differential
equations with sign-changing nonlinearities.
Our main tools are the fixed-point theorem in double cones and
the Leggett-Williams fixed point theorem. We present also the
integral kernel associated with the boundary-value problem.
Submitted December 8, 2008. Published May 14, 2009.
Math Subject Classifications: 34B10, 34B18.
Key Words: Nonnegative solutions; fixed-point theorem in double cones;
integral kernel; integral boundary conditions.
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Shouliang Xi College of Science University of Shanghai for Science and Technology Shanghai 200093, China email: xishouliang@163.com |
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Mei Jia College of Science University of Shanghai for Science and Technology Shanghai 200093, China email: jiamei-usst@163.com |
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Huipeng Ji College of Science University of Shanghai for Science and Technology Shanghai 200093, China email: jihuipeng1983@163.com |
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