4.7 Article

Positive periodic solutions of discrete n-species food-chain systems

Journal

APPLIED MATHEMATICS AND COMPUTATION
Volume 167, Issue 1, Pages 324-344

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.amc.2004.06.082

Keywords

n-species food-chain systems; positive periodic solution; holling type functional response; coincidence degree theory

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Discrete periodic n-species food-chain systems with Holling types II and III functional responses and time delays are investigated, respectively. By using Gaines and Mawhin's continuation theorem of coincidence degree theory sufficient conditions are obtained for the existence of positive periodic solutions of the systems. (c) 2004 Elsevier Inc. All rights reserved.

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