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Periodic solutions for a semi-ratio-dependent predator–prey system with nonmonotonic functional response and time delay

✍ Scribed by Xiaohua Ding; Chun Lu; Mingzhu Liu


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
330 KB
Volume
9
Category
Article
ISSN
1468-1218

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Four positive periodic solutions of a di
✍ 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