Abstract
In this paper, we review a recent progress of the study of the Diederich–Fornaess index of complex domains with emphasis on the case of domains with Levi-flat boundary. It is exhibited that for any compact Levi-flat real hypersurface, the norm of its infinitesimal holonomy must exceed the curvature of its normal bundle at a point.
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Digital Object Identifier: 10.2969/aspm/07210259