WANG Lijuan, JIANG Hongling. Qualitative Analysis and Numerical Simulation of Positive Solutions for a Predator-Prey Model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(4):55-62.
WANG Lijuan, JIANG Hongling. Qualitative Analysis and Numerical Simulation of Positive Solutions for a Predator-Prey Model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2015,54(4):55-62.DOI:
The steady state positive solutions of a predator-prey model with diffusion are studied. A priori estimate for positive solutions is obtained by using maximum principle. Applying to the local bifurcation theory
the existence of local bifurcation solutions is given. It follows from the global bifurcation theory that the local bifurcation solution can be extended to global bifurcation solution and the trend is obtained. Then a necessary and sufficient condition for the existence of positive solutions is obtained. By the stability theory
the stability of local bifurcation solutions is investigated. Finally
the theoretical results are verified and complemented by the numerical simulation.