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A Lotka–Volterra symbiotic model with cross-diffusion

2008; Elsevier BV; Volume: 246; Issue: 5 Linguagem: Inglês

10.1016/j.jde.2008.10.032

1090-2732

Manuel Delgado, Marcelo Montenegro, António Suárez,

Evolution and Genetic Dynamics

The main goal of this paper is to study the existence and non-existence of coexistence states for a Lotka–Volterra symbiotic model with cross-diffusion. We use mainly bifurcation methods and a priori bounds to give sufficient conditions in terms of the data of the problem for the existence of positive solutions. We also analyze the profiles of the positive solutions when the cross-diffusion parameter goes to infinity.