Regular Article
Periodicity in a Delayed Ratio-Dependent Predator–Prey System,☆☆

https://doi.org/10.1006/jmaa.2001.7555Get rights and content
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Abstract

With the help of a continuation theorem based on Gaines and Mawhin's coincidence degree, easily verifiable criteria are established for the global existence of positive periodic solutions of a delayed ratio-dependent predator–prey system in a periodic environment.

Keywords

Periodic solutions
ratio-dependent predator–prey system
coincidence degree

Cited by (0)

Work supported by the National Natural Sciences Foundation of the People's Republic of China (No. 19871012).

☆☆

Submitted by T. C. Gard

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[email protected]