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20242026
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math.AP2026

A Schauder regularity theory for nonlocal and mixed local-nonlocal viscous Hamilton$\unicode{x2013}$Jacobi equations

Espen Robstad Jakobsen, Robin Østern Lien, Artur Rutkowski

We prove space-time Schauder estimates $\unicode{x2013}$ optimal regularity estimates in Hölder spaces $\unicode{x2013}$ and well-posedness results for mild and classical solution…

math.AP2025

Nonlocal degenerate parabolic hyperbolic equations on bounded domains

Nathaël Alibaud, Jørgen Endal, Espen Jakobsen +1

We study well-posedness of degenerate mixed-type parabolic-hyperbolic equations on bounded domains with general Dirichl…

math.AP2025

Nonlocal degenerate parabolic hyperbolic equations on bounded domains. Part II: Existence

Jørgen Endal, Espen R Jakobsen, Ola Mæhlen

We study well-posedness of degenerate mixed-type parabolic-hyperbolic equations on bounded domains with general Diric…

math.AP2025

Long time behaviour of Mean Field Games with fractional diffusion

Olav Ersland, Espen Robstad Jakobsen, Alessio Porretta

In this paper we study the long time behaviour of mean field games systems with fractional diffusion, modeling the case that the individual dynamics of the players is driven by ind…

math.AP2025

The master equation for mean field game systems with fractional and nonlocal diffusions

Espen Robstad Jakobsen, Artur Rutkowski

We prove existence and uniqueness of classical solutions of the master equation for mean field game (MFG) systems with fractional and nonlocal diffusions. We cover a large class of…