摘要
利用Mawhin重合度理论研究了具有稀疏效应和Beddington-DeAnge- lis功能性反应的捕食者-食饵系统的正周期解的存在性问题,得到了该生物系统正周期解存在的一个充分条件,推广了相关文献的某些已知结果．
By using the continuation theorem based on coincidence degree theory,the existence of positive periodic solution for a periodic predator-prey system with sparse effect and Beddington-DeAngelis functional response is studied in this paper.A sufficient condition is derived about it,which improve some known results.
出处
《哈尔滨师范大学自然科学学报》
CAS
2006年第6期4-6,11,共4页
Natural Science Journal of Harbin Normal University
基金
黑龙江省教育厅科学技术研究项目(11513043)
