Abstract
We introduce a class of fully nonlinear integro-differential operators with possible nonsymmetric kernels. For the index σ of the operator in (1, 2) (subcritical case), we introduce a very general class of fully nonlinear integro-differential operators and obtain a comparison principle, a nonlocal version of the Alexandroff–Backelman–Pucci estimate, a Harnack inequality, a Hölder regularity, and an interior C1,α-regularity for equations associated with such a class.
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Kim, YC., Lee, KA. Regularity Results for Fully Nonlinear Integro-Differential Operators with Nonsymmetric Positive Kernels: Subcritical Case. Potential Anal 38, 433–455 (2013). https://doi.org/10.1007/s11118-012-9280-2
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DOI: https://doi.org/10.1007/s11118-012-9280-2