Local Hölder Regularity For Nonlocal Porous Media And Fast Diffusion Equations With General Kernel

2025/04/22 by Kim, Kyeongbae, Lee, Ho-Sik, Prasad, Harsh · 1 citation
#35B65 #35K55 #35R09 #47G20 #Analysis of PDEs (math.AP) #FOS: Mathematics

paper · doi:10.48550/arxiv.2504.15735

Abstract

We show that locally bounded, local weak solutions to certain nonlocal, nonlinear diffusion equations modeled on the fractional porous media and fast diffusion equations given by ∂_t u + (-Δ)^s(|u|^m-1u) = 0 for 00 are locally Hölder continuous. We work with bounded, measurable kernels and provide the corresponding L^∞_loc → C^0,α_loc De Giorgi-Nash-Moser theory for the equation via a delicate analysis of the set of singularity/degeneracy in a geometry dictated by the solution itself and a careful analysis of far-off effects. In particular, our results are in the spirit of interior regularity, requiring the equation to hold only locally, and thus are new even for positive solutions of the equation with constant coefficients.

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• Hölder regularity of weak solutions to nonlocal doubly degenerate parabolic equations

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