Existence and Uniqueness of Periodic Solution for Nonlinear Second-Order Ordinary Differential Equations
College of Mathematics, Jilin University, Changchun 130012, China
Boundary Value Problems 2011, 2011:192156 doi:10.1155/2011/192156Published: 15 March 2011
We study periodic solutions for nonlinear second-order ordinary differential problem . By constructing upper and lower boundaries and using Leray-Schauder degree theory, we present a result about the existence and uniqueness of a periodic solution for second-order ordinary differential equations with some assumption.