Positive periodic solutions of impulsive delay differential equations with sign-changing coefficient.
Liu, Yuji, Bai, Zhanbing, Gui, Zhanjie, Ge, Weigao (2004)
Portugaliae Mathematica. Nova Série
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Liu, Yuji, Bai, Zhanbing, Gui, Zhanjie, Ge, Weigao (2004)
Portugaliae Mathematica. Nova Série
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Wang, Weibing, Shen, Jianhua, Nieto, Juan J. (2007)
Discrete Dynamics in Nature and Society
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Alzabut, J.O., Nieto, J.J., Stamov, G.Tr. (2009)
Boundary Value Problems [electronic only]
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Wang, Jinrong, Xiang, X., Wei, W. (2009)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Bai, Chuanzhi (2008)
Boundary Value Problems [electronic only]
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Wang, Jinrong, Xiang, X., Wei, W., Chen, Qian (2008)
Journal of Inequalities and Applications [electronic only]
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Wang, Jinrong, Xiang, X., Wei, W. (2008)
Abstract and Applied Analysis
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Wang, Jinrong, Xiang, X., Wei, W. (2007)
Advances in Difference Equations [electronic only]
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Changjin Xu, Qianhong Zhang, Maoxin Liao (2013)
Applications of Mathematics
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In this paper, a class of non-autonomous delayed competitive systems with the effect of toxic substances and impulses is considered. By using the continuation theorem of coincidence degree theory, we derive a set of easily verifiable sufficient conditions that guarantees the existence of at least one positive periodic solution, and by constructing a suitable Lyapunov functional, the uniqueness and global attractivity of the positive periodic solution are established.