TY - JOUR A1 - Abatangelo, Nicola T1 - A remark on nonlocal Neumann conditions for the fractional Laplacian T2 - Archiv der Mathematik T2 - Archives mathématiques T2 - Archives of mathematics N2 - We show how nonlocal boundary conditions of Robin type can be encoded in the pointwise expression of the fractional operator. Notably, the fractional Laplacian of functions satisfying homogeneous nonlocal Neumann conditions can be expressed as a regional operator with a kernel having logarithmic behaviour at the boundary. KW - Fractional Laplacian KW - Nonlocal normal derivative KW - Nonlocal Neumann conditions KW - Regional Laplacian Y1 - 2020 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/63790 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-637900 SN - 1420-8938 N1 - Open Access funding provided by Projekt DEAL. VL - 114 IS - 6 SP - 699 EP - 708 PB - Springer CY - Berlin ; Heidelberg ER -