Results 91 to 100 of about 38,020 (248)

Permanence and Hopf bifurcation of a delayed eco-epidemic model with Leslie–Gower Holling type III functional response

open access: yesSystems Science & Control Engineering, 2019
This paper is concerned with a delayed eco-epidemic model with a Leslie–Gower Holling type III functional response. The main results are given in terms of permanence and Hopf bifurcation.
Zi Zhen Zhang   +3 more
doaj   +1 more source

Hopf Bifurcation Analysis for a Computer Virus Model with Two Delays

open access: yesAbstract and Applied Analysis, 2013
This paper is concerned with a computer virus model with two delays. Its dynamics are studied in terms of local stability and Hopf bifurcation. Sufficient conditions for local stability of the positive equilibrium and existence of the local Hopf ...
Zizhen Zhang, Huizhong Yang
doaj   +1 more source

A delayed computer virus model with nonlinear incidence rate

open access: yesSystems Science & Control Engineering, 2019
An Susceptible-Vaccinated-Exposed-Infectious-Recovered computer virus model with nonlinear incidence rate and two delays is proposed and its Hopf bifurcation is investigated.
Yugui Chu, Wanjun Xia, Zecheng Wang
doaj   +1 more source

Hopf Bifurcation in Coastal Ecogeosystems

open access: yesCybernetics and Systems Analysis, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Selezov, I. T.   +2 more
openaire   +2 more sources

Bifurcation of a Microelectromechanical Nonlinear Coupling System with Delay Feedback

open access: yesJournal of Applied Mathematics, 2014
The dynamics of a kind of electromechanical coupling deformable micromirror device torsion micromirror with delay are investigated. Based on the distribution of eigenvalues, we prove that a sequence of Hopf bifurcation occurs at the equilibrium as the ...
Yanqiu Li   +3 more
doaj   +1 more source

Hopf bifurcation, stability switches and chaos in a prey-predator system with three stage structure and two time delays

open access: yesMathematical Biosciences and Engineering, 2019
A three stage-structured prey-predator model with digestion delay and density dependent delay for the predator is investigated. The stability of the equilibrium point and the Hopf bifurcation of the system by choosing time delay as a bifurcation ...
Shunyi Li
doaj   +1 more source

A torus bifurcation theorem with symmetry [PDF]

open access: yes
Hopf bifurcation in the presence of symmetry, in situations where the normal form equations decouple into phase/amplitude equations is described. A theorem showing that in general such degeneracies are expected to lead to secondary torus bifurcations is ...
Golubitsky, M., Vangils, S. A.
core   +1 more source

On degenerate planar Hopf bifurcations

open access: yesJournal of Physics A: Mathematical and Theoretical, 2011
Our concern is the study of degenerate Hopf bifurcation of smooth planar dynamical systems near isolated singular points. To do so, we propose to split up the definition of degeneracy into two types. Degeneracy of first kind shall means that no limit cycle surrounding the steady state can emerge after or before the critical point, with the possible ...
openaire   +2 more sources

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