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9 papers · 2 filters
The Harnack inequality for a class of degenerate elliptic operators
Francois Hamel, Andrej Zlatos
We prove a Harnack inequality for distributional solutions to a type of degenerate elliptic PDEs in dimensions. The differential operators in question are related to the Kolmog…
Speed-up of combustion fronts in shear flows
Francois Hamel, Andrej Zlatos
This paper is concerned with the analysis of speed-up of reaction-diffusion-advection traveling fronts in infinite cylinders with periodic boundary conditions. The advection is a s…
Maximal and minimal spreading speeds for reaction diffusion equations in nonperiodic slowly varying media
Jimmy Garnier, Thomas Giletti, Gregoire Nadin
This paper investigates the asymptotic behavior of the solutions of the Fisher-KPP equation in a heterogeneous medium, associated with…
Nonlinear equations for fractional Laplacians II: existence, uniqueness, and qualitative properties of solutions
Xavier Cabre, Yannick Sire
This paper, which is the follow-up to part I, concerns the equation in , with , where stands for the fractional Laplaci…
Inside dynamics of pulled and pushed fronts
Jimmy Garnier, Thomas Giletti, Francois Hamel +1
We investigate the inside structure of one-dimensional reaction-diffusion traveling fronts. The reaction terms are of the monostable, bistable or ignition types. Assuming that the…
Propagation of low regularity for solutions of nonlinear PDEs on a Riemannian manifold with a sub-Laplacian structure
Frédéric Bernicot, Yannick Sire
Following \cite{B2}, we introduce a notion of para-products associated to a semi-group. We do not use Fourier transform arguments and the background manifold is doubling, endowed w…