Multiple Nonnegative Solutions for a Class of Fourth-Order BVPs Via a New Topological Approach

Abstract

In this paper, we study a class of fourth-order boundary value problems with integral boundary conditions. The nonlinearity may have time-singularity and change sign. Moreover, it satisfies general polynomial growth conditions. A new topological approach is applied to prove the existence of at least two nonnegative classical solutions. An example of application illustrates the existence result.

Keywords

• ODE
• fourth-order BVPs
• nonnegative solution
• fixed point
• cone
• sum of operators

Kaynakça

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