快速检索:      
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 496次   下载 1164 本文二维码信息
码上扫一扫!
分享到: 微信 更多
具有避难所的非自治捕食系统的周期解
王惠程1, 夏永辉1, 邹长武2
1.浙江师范大学;2.福州大学
摘要:
考虑了一类具有避难所的非自治捕食系统, 得到了该模型存在正周期解的新颖充分条件.所使用的方法是把Mawhin重合度理论和算子方程先验界的一些新估计技巧相结合.
关键词:  捕食模型  避难所  周期解
DOI:
分类号:
基金项目:
Periodic solutions of a nonautonomous predator-prey model with a constant refuge
WANG Huicheng1, XIA Yonghui1, ZOU Changwu2
1.Department of Mathematics, Zhejiang Normal University;2.College of Mathematics and Computer Science, Fuzhou University
Abstract:
We consider the nonautonomous predator-preymodel with a constant refuge. Some new and interesting sufficient conditions are obtained for the global existence of the positive periodic solutions of such a model. Our method is based on Mawhin’s coincidence degree and novel estimation techniques for the a priori bounds of unknown solutions to Lx = λNx.
Key words:  predator-prey model  refuge  periodic solution