Existence of at Least Two Periodic Solutions of a Ratio-dependent Predator-prey Model with Exploited Term  

作　　者：De-sheng Tian Xian-wu Zeng 

机构地区：[1]College of Mathematics and Statistics, Wuhan University, Wuhan 430072, China

出　　处：《Acta Mathematicae Applicatae Sinica》2005年第3期489-494,共6页应用数学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （No.19531070）

摘　　要：In this paper, we study a non-autonomous ratio-dependent predator-prey model with exploited term. By means of the coincidence degree theory, we establish a sufficient condition for the existence of at least two positive periodic solutions of this model.In this paper, we study a non-autonomous ratio-dependent predator-prey model with exploited term. By means of the coincidence degree theory, we establish a sufficient condition for the existence of at least two positive periodic solutions of this model.

关 键 词：Predator-prey model RATIO-DEPENDENT exploited term periodic solution coincidence degree 

分 类 号：O141.4[理学—数学]