A Note on Periodic Solutions of Second Order Nonautonomous Singular Coupled Systems

• DOI: 10.1155/2010/458918
• Publication Date: 2010-11-02T19:33:15Z
• Authors: Zhongwei Cao; Chengjun Yuan; Daqing Jiang; Xiaowei Wang
• Keywords: 0101 mathematics; 01 natural sciences

We establish the existence of periodic solutions second order nonautonomous singular coupled systems x ′′ + a 1 ( t ) = f , y )) e for a.e. ∈ [0, T ], 2 ]. The proof relies on Schauder′s fixed point theorem.