Results 11 to 20 of about 26 (25)

Periodic solution for a delayed three‐species food‐chain system with Holling type‐II functional response

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 64, Page 4057-4070, 2003., 2003
A delayed three‐species periodic food‐chain system with Holling type‐II functional response is investigated. By using Gaines and Mawhin′s continuation theorem of coincidence degree theory, a set of easily verifiable sufficient conditions is derived for the existence of positive periodic solutions to the system.
Qiming Liu, Rui Xu
wiley   +1 more source

Periodic solutions of periodic generalized food limited model

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 25, Issue 4, Page 265-271, 2001., 2001
By using the continuation theorem of coincidence degree theory, the existence of positive periodic solutions for a periodic generalized food limited model with state dependent delays and distributed delays is studied, respectively.
Yongkun Li
wiley   +1 more source

On existence of periodic solutions of the Rayleigh equation of retarded type

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 23, Issue 1, Page 65-68, 2000., 2000
In this paper, we give two sufficient conditions on the existence of periodic solutions of the non‐autonomous Rayleigh equation of retarded type by using the coincidence degree theory.
Genqiang Wang, Jurang Yan
wiley   +1 more source

Branches of Forced Oscillations Induced by a Delayed Periodic Force

open access: yesAdvanced Nonlinear Studies, 2019
We study global continuation properties of the set of T-periodic solutions of parameterized second order delay differential equations with constant time lag on smooth manifolds. We apply our results to get multiplicity of T-periodic solutions.
Calamai Alessandro   +2 more
doaj   +1 more source

Existence of positive periodic solutions for fourth-order nonlinear neutral differential equations with variable delay

open access: yesAdvances in Nonlinear Analysis, 2014
In this article we study the existence of positive periodic solutions for a fourth-order nonlinear neutral differential equation with variable delay.
Ardjouni Abdelouaheb   +2 more
doaj   +1 more source

Positive periodic solutions of nonautonomous functional differential equations depending on a parameter

open access: yes, 2002
Abstract and Applied Analysis, Volume 7, Issue 5, Page 279-286, 2002.
Guang Zhang, Sui Sun Cheng
wiley   +1 more source

The dynamical analysis of a nonlocal predator–prey model with cannibalism

open access: yesEuropean Journal of Applied Mathematics
Cannibalism is often an extreme interaction in the animal species to quell competition for limited resources. To model this critical factor, we improve the predator–prey model with nonlocal competition effect by incorporating the cannibalism term, and ...
Daifeng Duan   +3 more
doaj   +1 more source

Existence and globally exponential stability of equilibrium for fuzzy BAM neural networks with distributed delays and impulse

open access: yesAdvances in Difference Equations, 2011
In this article, fuzzy bi-directional associative memory neural networks with distributed delays and impulses are considered. Some sufficient conditions for the existence and globally exponential stability of unique equilibrium point are established ...
Liao Daixi, Yang Lihui, Zhang Qianhong
doaj  

Periodic dynamics of a general switching dynamical system

open access: yesEuropean Journal of Applied Mathematics
Seasonal changes and cyclical human activities (such as periodic fishing bans, Wolbachia-based mosquito population control, and school term breaks) have significant impacts on population dynamics.
Qian Ding   +4 more
doaj   +1 more source

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