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The existence of positive periodic solutions of a time-lag predator-prey system with functional response. (Chinese. English summary) Zbl 1150.92341

Summary: An investigation has been made of a time-lag predator-prey system with functional response by using the continuation theorem in coincidence degree theory, obtaining sufficient conditions for identifying the existence of positive periodic solutions to the ecosystem. The findings in this paper have improved and generalized some of the viewpoints in the literature.

MSC:

92D40 Ecology
34C25 Periodic solutions to ordinary differential equations
34K13 Periodic solutions to functional-differential equations
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