摘要
考虑一类浮游生物植化相克时滞微分方程,得到了该系统存在一个周期解的充分条件.
In this paper,using coincidence degree theory,we study the sufficient condition for the existence of periodic solution for a delay differential equation of plankton allelopathy.We make advantage of the prior estimate to study the equation.We gain more accurate prior estimate and improve the known result of the related literature.
出处
《北京工商大学学报（自然科学版）》
CAS
2009年第6期54-56,共3页
Journal of Beijing Technology and Business University:Natural Science Edition
基金
国家自然科学基金资助项目(10471153)
关键词
浮游生物生态系统
植化相克
时滞
叠合度
周期解
时滞微分方程
plankton ecological system
allelopathy
time delay
coincidence degree
periodic solution
delay differential equations
