A note on the existence and construction of Dulac functions
Articles
Osvaldo Osuna
Universidad Michoacana, Mexico
Joel Rodríguez-Ceballos
Instituto Tecnológico de Morelia, Mexico
Cruz Vargas-De-León
Instituto Politécnico Nacional, Mexico
Gabriel Villaseñor-Aguilar
Instituto Tecnológico de Morelia, Mexico
Published 2017-07-10
https://doi.org/10.15388/NA.2017.4.1
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Keywords

predator–prey model
Hopf bifurcation
global asymptotical stability
iterative technique
center manifold theorem

How to Cite

Osuna, O. (2017) “A note on the existence and construction of Dulac functions”, Nonlinear Analysis: Modelling and Control, 22(4), pp. 431–440. doi:10.15388/NA.2017.4.1.

Abstract

This paper is concerned with a predator–prey model with hyperbolic mortality and prey harvesting. The parameter regions for the stability and instability of the unique positive constant solution of ODE and PDE are derived, respectively. Especially, the global asymptotical stability of positive constant equilibrium of the diffusive model is obtained by iterative technique. The stability and direction of periodic solutions of ODE and PDE are investigated by center manifold theorem and normal form theory, respectively. Numerical simulations are carried out to depict our theoretical analysis.

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