Hopf's lemma for a class of fractional singular/degenerate PDE-s

Problem's Description

How can we prove Hopf's boundary point lemma, in $C^{1,Dini}$-type domains, for fractional singular/degenerate PDE-s.

This was done for standard singular/degenerate PDE-s in reference [1].

1. ArticleIs an originHopf's lemma for a class of singular/degenerate PDE-s

   • Hayk Mikayelyan,
   • Henrik Shahgholian

   Hopf's lemma for a class of singular/degenerate PDE-s. Ann. Acad. Sci. Fenn. Math. 40 (1), 475-484, 2015arXiv