The determinacy of wave speed sign for a reaction-diffusion system with nonlocal diffusion

Wang, Kaili; Meng, Wentao; Li, Xu; Ma, Manjun

doi:10.1090/proc/16769

The determinacy of wave speed sign for a reaction-diffusion system with nonlocal diffusion
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by Kaili Wang, Wentao Meng, Xu Li and Manjun Ma;

Proc. Amer. Math. Soc. 152 (2024), 2845-2861

DOI: https://doi.org/10.1090/proc/16769

Published electronically: May 7, 2024

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Abstract:

The upper and lower solution method is a recently developed and currently the most effective tool for determining the sign of bistable traveling wave. However, for systems with nonlocal diffusion terms, it is extremely challenging to find upper and lower solutions. In this paper, we develop a new idea for constructing the upper and lower solutions to establish the explicit conditions for obtaining positive or negative wave speed for a Lotka-Volterra competitive system with bistable nonlinearity. The theoretical results are demonstrated by directly integrating the considered system. This method can be used to improve or correct the related results in the known references.

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