The Dirichlet problem for Lévy-stable operators with $$L^2$$-data
Florian Grube,
Thorben Hensiek,
Waldemar Schefer
Abstract:We prove Sobolev regularity for distributional solutions to the Dirichlet problem for generators of 2s-stable processes and exterior data, inhomogeneity in weighted $$L^2$$
L
2
-spaces. This class of operators includes the fractional Laplacian. For these rough exterior data the theory of weak variational solutions is not applicable. Our regularity estimate is robust in the limit $$s\rightarrow 1-$$
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