Existence of Multiple Positive Periodic Solutions of Delayed Predator-Prey Models with Functional Responses
نویسندگان
چکیده
منابع مشابه
Existence of positive periodic solutions for delayed predator-prey patch systems with stocking
Predator-prey systems have been studied extensively. See, for instance, [1, 6, 8–10] and the references cited therein. Most of the previous papers focused on the predator-prey systems without stocking. Brauer and Soudack [2, 3] studied some predator-prey systems under constant rate stocking. To our knowledge, few papers have been published on the existence of positive periodic solutions for del...
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A discrete predator-prey model with Holling II and Beddington-DeAngelis functional responses is investigated. With the aid of differential equations with piecewise constant arguments, a discrete version of continuous nonautonomous delayed predator-prey model with BeddingtonDeAngelis functional responses is proposed. By using Gaines andMawhin’s continuation theorem of coincidence degree theory, ...
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Tianwei Zhang 1,*, Liyan Pang 2 and Yongzhi Liao 3 1 City College, Kunming University of Science and Technology, Kunming 650051, China 2 School of Mathematics and Computer Science, Ningxia Normal University, Guyuan, Ningxia 756000, China; [email protected] 3 School of Mathematics and Computer Science, Panzhihua University, Panzhihua, Sichuan 617000, China; [email protected] * Correspondence: zh...
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In this paper, we consider a periodic delayed predator-prey systems with harvesting terms and Holing III type functional responses on time scales. Using coincidence degree theory, some sufficient conditions are obtained for the global existence of multiple positive periodic solutions of the model.
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Reasonable sufficient conditions are obtained for the existence of positive periodic solutions in periodic delayed Gause-type predator-prey systems. Our approach involves the application of coincidence degree theorem and estimations of uniform upper bounds on solutions. This method imposes minimum restrictions on the form and magnitude of time delays. Indeed, our results are applicable to discr...
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ژورنال
عنوان ژورنال: Computers & Mathematics with Applications
سال: 2006
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2006.08.030