The Lyapunov stability for the linear and nonlinear damped oscillator with time-periodic parameters.
Positive solutions and eigenvalues of nonlocal boundary-value problems.
Recent existence results for second-order singular periodic differential equations.
Multiplicity of positive solutions to second order differential equations with Neumann boundary conditions
We study the existence of positive solutions to second order nonlinear differential equations with Neumann boundary conditions. The proof relies on a fixed point theorem in cones, and the positivity of Green's function plays a crucial role in our study.
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