Title of article :
Periodic solutions for some second order systems
Original Research Article
Author/Authors :
Fengjuan Meng، نويسنده , , Fubao Zhang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
In this paper, we use the Minimax Theorem to investigate periodic solutions of some second order systems, and give some sufficient conditions for the existence for periodic solutions. The results generalize and improve some known results.
Keywords :
Periodic solution , Supquadratic , The Saddle Point Theorem , critical points
Journal title :
Nonlinear Analysis Theory, Methods & Applications
Journal title :
Nonlinear Analysis Theory, Methods & Applications
