Electron. J. Diff. Eqns., Vol. 2006(2006), No. 99, pp. 1-10.

Stable time periodic solutions for damped Sine-Gordon equations

Jianmin Zhu, Zhixiang Li, Yicheng Liu

Abstract:
We investigate existence and stability of time periodic solutions for damped Sine-Gordon equations with delay under reasonable assumptions. The key-step is constructing suitable Lyapunov functionals and establishing the priori bound for all possible periodic solutions. We also use the Schaefer fixed-point theorem.

Submitted May 2, 2006. Published August 31, 2006.
Math Subject Classifications: 34K13, 35K50.
Key Words: Schaefer's fixed-point theorem; time periodic solutions; Sine-Gordon equations; uniformly asymptotic stability.

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Jianmin Zhu
Department of Mathematics and System Science
College of Science, National University of Defense Technology
Changsha, 410073, China
email: zhujmmath@hotmail.com
  Zhixiang Li
Department of Mathematics and System Science
College of Science, National University of Defense Technology
Changsha, 410073, China
email: zhxli02@yahoo.com.cn
  Yicheng Liu
Department of Mathematics and System Science
College of Science, National University of Defense Technology
Changsha, 410073, China
email: liuyc2001@hotmail.com

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