Abstract
The cross-diffusion competition systems were introduced by Shigesada et al. [J. Theor. Biol. 79, 83–99 (1979)] to describe the population pressure by other species. In this paper, introducing the densities of the active individuals and the less active ones, we show that the cross-diffusion competition system can be approximated by the reaction-diffusion system which only includes the linear diffusion. The linearized stability around the constant equilibrium solution is also studied, which implies that the cross-diffusion induced instability can be regarded as Turing’s instability of the corresponding reaction-diffusion system.
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M. Iida was partially supported by Grant-in-Aid for Scientific Research (No. (C)15540194), Japan Society for the Promotion of Science.
M. Mimura was partially supported by Grant-in-Aid for Scientific Research (No. (A)15204006), Japan Society for the Promotion of Science.
H. Ninomiya was Partially supported by Grant-in-Aid for Young Scientists (No. (B)15740076), Japan Society for the Promotion of Science.
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Iida, M., Mimura, M. & Ninomiya, H. Diffusion, Cross-diffusion and Competitive Interaction. J. Math. Biol. 53, 617–641 (2006). https://doi.org/10.1007/s00285-006-0013-2
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DOI: https://doi.org/10.1007/s00285-006-0013-2