Zhigang Liu, Anping Chen, Jinde Cao, & Fengde Chen
Abstract:
By using the continuation theorem of Mawhin's coincidence degree theory,
some sufficient conditions are obtained ensuring the existence of
multiple positive periodic solutions of a discrete time
predator-prey systems with type IV functional responses.
Submitted September 2, 2003. Published January 2, 2004.
Math Subject Classifications: 39A11, 92B05.
Key Words: Periodic solution, delayed predator-prey, coincidence degree,
type IV functional response, non-autonomous difference equation.
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Zhigang Liu Department of Mathematics Xiangnan University Chenzhou, Hunan 423000, China email: lzglzglzg4359@sina.com |
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Anping Chen Department of Mathematics Xiangnan University Chenzhou, Hunan 423000, China email: anping_chen@hotmail.com |
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Jinde Cao Department of Mathematics Southeast University Nanjing 210096, China email: jdcao@seu.edu.cn |
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Fengde Chen Department of Mathematics Fuzhou University, Fuzhou, Fujian 350002, China email: fdchen@fzu.edu.cn |
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