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The parabolic Harnack inequality for nonlocal equations

Moritz Kaßmann, Marvin Weidner

2024Duke Mathematical Journal19 citationsDOI

Abstract

We complete the local regularity program for weak solutions to linear parabolic nonlocal equations with bounded measurable coefficients. Within the variational framework we prove the parabolic Harnack inequality and Hölder regularity estimates. We discuss in detail the shortcomings of previous results in this direction. The key element of our approach is a fine study of the nonlocal tail term.

Topics & Concepts

Harnack's inequalityHarnack's principleMathematicsMathematical analysisInequalityParabolic partial differential equationPartial differential equationDifferential Equations and Boundary ProblemsNonlinear Partial Differential EquationsNumerical methods in inverse problems