collaborators

11 papers

math.AP2026

Kinetic Fokker-Planck equations with Maxwell boundary conditions

Kyeongbae Kim, Marvin Weidner

We develop the boundary regularity theory for solutions to linear kinetic Fokker-Planck equations with Maxwell boundary conditions. These conditions interpolate between diffuse and…

math.AP2026

Boundary Harnack estimates of optimal order for kinetic Fokker-Planck equations

Kyeongbae Kim, Marvin Weidner

We establish higher order boundary Harnack estimates for solutions to kinetic Fokker-Planck equations with absorbing incoming boundaries. Unlike classical elliptic and parabolic eq…

math.AP2026

Sharp regularity near the grazing set for kinetic Fokker-Planck equations

Kyeongbae Kim, Marvin Weidner

We prove optimal regularity results for solutions to linear kinetic Fokker-Planck equations in bounded domains. Our contributions are two-fold. First, we establish the sharp $C^{1/…

math.AP2025

Dirichlet heat kernel estimates for parabolic nonlocal equations

Philipp Svinger, Marvin Weidner

In this article we establish the optimal boundary regularity for solutions to nonlocal parabolic equations in divergence form in domains and prove a higher order b…

math.AP2025

The Neumann problem for the fractional Laplacian: optimal regularity via the Mellin transform

Serena Dipierro, Xavier Ros-Oton, Enrico Valdinoci +1

We establish the optimal regularity of solutions to the Neumann problem for the fractional Laplacian, in , with the external condition in $Ω^c…

math.AP2025

Optimal boundary regularity and Green function estimates for nonlocal equations in divergence form

Minhyun Kim, Marvin Weidner

In this article we prove for the first time the boundary regularity for solutions to nonlocal elliptic equations with Hölder continuous coefficients in divergence form in $C…