Preprint
Sep 2026
The fractional Fisher-KPP equation with free boundaries
In this paper, we consider a free boundary problem with fractional diffusion $(-\Delta)^s$ $(0<s<1)$, as a model for species spreading, which can be viewed as a natural extension of the free boundary model in \cite{CDLL2019}, where the nonlocal diffusion term is defined via a continuous integrable kernel function $J(x)...
Hu-Yuan Chen, Yi-Hong Du, Wen-Jie Ni
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