Positive periodic solutions of second-order nonlinear neutral differential equations with variable coefficients

In this paper, we use Krasnoselskii's fixed point theorem to establish the existence of positive periodic solutions of second-order nonlinear neutral differential equations. Our techniques can be used and applied to study other classes of problems and extension some results.

• positive periodic solutions
• second-order nonlinear differential equations
• neutral differential equations
• variable coefficients
• Krasnoselskii fixed point theorem
• existence of solutions

• Nonlinear Differential Equations Analysis
• Advanced Differential Equations and Dynamical Systems
• Fixed Point Theorems Analysis
• positive periodic solutions
• second-order nonlinear differential equations
• neutral differential equations
• variable coefficients
• Krasnoselskii fixed point theorem
• existence of solutions
• Applied Mathematics
• Geometry and Topology
• Mathematics