11-103 Raffaella Servadei and Enrico Valdinoci
Lewy-Stampacchia type estimates for variational inequalities driven by (non)local operators (98K, LaTex) Jul 4, 11
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Abstract. The purpose of this paper is to derive some Lewy-Stampacchia estimates in some cases of interest, such as the ones driven by non-local operators. Since we will perform an abstract approach to the problem, this will provide, as a byproduct, Lewy-Stampacchia estimates in more classical cases as well. In particular, we can recover the known estimates for the standard Laplacian, the $p$-Laplacian, and the Laplacian in the Heisenberg group. In the non-local framework we prove a Lewy-Stampacchia estimate for a general integrodifferential operator and, as a particular case, for the fractional Laplacian. As far as we know, the results in the non-local setting are new.

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