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EFFECT OF TOXIC SUBSTANCE ON A NONAUTONOMOUS COMPETITIVE SYSTEM

EFFECT OF TOXIC SUBSTANCE ON A NONAUTONOMOUS COMPETITIVE SYSTEM
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摘要 In this paper, we consider a nonautonomous competitive system which is also affected by toxic substances. Some averaged conditions for the permanence of this system are obtained. Our result shows that under some suitable assumption on the coefficients of the system, the toxic has no influence on the permanence of the system. Also, by using a suitable Lyapunov function, sufficient conditions which guarantee the attractivity of any two positive solutions of the system are obtained. In this paper, we consider a nonautonomous competitive system which is also affected by toxic substances. Some averaged conditions for the permanence of this system are obtained. Our result shows that under some suitable assumption on the coefficients of the system, the toxic has no influence on the permanence of the system. Also, by using a suitable Lyapunov function, sufficient conditions which guarantee the attractivity of any two positive solutions of the system are obtained.
作者 He Weilian
出处 《Annals of Differential Equations》 2005年第3期305-310,共6页 微分方程年刊(英文版)
基金 This work is supported by the National Natural Science Foundation of China (Tian Yuan Foundation) (10426010) the Foundation of Science and Technology of Fujian Province for Young Scholars (2004J0002) the Foundation of Fujian Education Bureau (JA04156) the Foundation of Developing Science Technology of Fuzhou University (2003-QX-21).
关键词 COMPETITION TOXICOLOGY average condition PERMANENCE ATTRACTIVITY competition toxicology average condition permanence attractivity
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