A RESULT ONPERIODIC SOLUTIONS OF SECOND ORDER FUNCTIONAL DIFFERENTIAL EQUATIONS

• 作者: 张正球
• 来源期刊: 微分方程年刊：英文版
• 学科: 数学
• 关键词: 逼近 周期解 定理 重合度
• 年，卷（期）: 2004,（2）
• 页码范围: 208-214
• 页数: 7页
• 分类号: O174.41

摘要

We obtain sufficient condition for the existence of periodic solutions of thefα(t)+bf(x(t))+g(x(t-τ1),x′(t-τ2))=p(t)=p(t+2π).Our approach is based on the continuation theorem of coincidence degree, and the a-priori:estimate of periodic solutions.