Anders Björn
Published 2017-05-05Version 1
In this paper boundary regularity for p-harmonic functions is studied with respect to the Mazurkiewicz boundary and other compactifications. In particular, the Kellogg property (which says that the set of irregular boundary points has capacity zero) is obtained for a large class of compactifications, but also two examples when it fails are given. This study is done for complete metric spaces equipped with doubling measures supporting a p-Poincar\'e inequality, but the results are new also in unweighted Euclidean spaces.
The Dirichlet problem for p-harmonic functions with respect to arbitrary compactifications
The Perron method for p-harmonic functions in unbounded sets in R^n and metric spaces
The Cartan, Choquet and Kellogg properties for the fine topology on metric spaces
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