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Multiple positive periodic solutions of a delayed discrete predator–prey system with type IV functional responses

✍ Scribed by Weipeng Zhang; Deming Zhu; Ping Bi

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
212 KB
Volume
20
Category
Article
ISSN
0893-9659

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Four positive periodic solutions of a di
Four positive periodic solutions of a discrete time delayed predator–prey system with nonmonotonic functional response and harvesting
✍ Daowei Hu; Zhengqiu Zhang 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 477 KB

## a b s t r a c t In this paper, by employing the continuation theorem of coincidence degree theory, we establish an easily verifiable criteria for the existence of at least four positive periodic solutions for a discrete time delayed predator-prey system with nonmonotonic functional response and