Author

J. Roquejoffre

2 papers indexed here

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Preprint Sep 2026

Sharp asymptotics for a transport model with a nonlocal condition of the Fisher-KPP type at the boundary

This paper is concerned with the precise asymptotics, as time goes to infinity, of a transport problem in a half plane coupled with a nonlinear nonlocal boundary condition. This system arises from a class of models for the spatial spread of epdemics, its space independent version being the classical Kermack-McKendrick...

Grégory Faye, J. Roquejoffre, Ming-Min Zhang · 0 citations

Preprint Sep 2026

Large time behaviour in the multidimensional nonlocal Fisher-KPP equation

This work studies the expansion of the level sets of the solutions of a Fisher-KPP type reaction- diffusion equation, the diffusion being given by a nonnegative, compactly supported, even kernel. Because the latter is not assumed to be spherically symmetric, the level sets advance at an asymptotic speed given by a Frei...

J. Roquejoffre, Ming-Min Zhang · 0 citations