PERIODIC SOLUTIONS FOR A DISCRETE TIME RATIO-DEPENDENT TWO PREDATOR-ONE PREY SYSTEM

• 作者: 柏灵 王克 范猛
• 来源期刊: 微分方程年刊：英文版
• 学科: 数学
• 关键词: 动力学 数学模拟 重合度 正周期解 系数 微分方程
• 年，卷（期）: 2004,（1）
• 页码范围: 1-13
• 页数: 13页
• 分类号: O175

摘要

In this paper, we consider a three-species ratio-dependent predator-prey model governed by difference equations with periodic coefficients. By using the method of coincidence degree, we discuss the existence of positive periodic solutions of this system, a set of easily verifiable sufficient conditions are derived.