有毒物影响的两竞争种群多时滞系统的周期解(英文)

Effect of Toxicants on a Two-species Competitve System with Multi-delays

本文研究了有毒物影响的两竞争种群系统 ,利用迭合度理论获得了系统存在正周期解的充分条件 .

In this paper we have investigated a two-species competitive system which is also affected by toxic substance. With the help of continuation theorem in coincidence degree theory, sufficient conditions for the existence of positive periodic solutions of system are obtained.