Multiple Positive Periodic Solutions to a Periodic Predator-Prey-Chain Model with Harvesting Terms

In this paper, a class of predator-prey-chain model with harvesting terms are studied. By using Mawhin-s continuation theorem of coincidence degree theory and some skills of inequalities, some sufficient conditions are established for the existence of eight positive periodic solutions. Finally, an example is presented to illustrate the feasibility and effectiveness of the results.

• Zhouhong Li
• Jiming Yang

• Positive periodic solutions
• Predator-prey-chain model
• coincidence degree
• harvesting term.

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