A smooth regularity theorem for nondegenerate CR-mappings
Bernhard Lamel
Abstract
We prove the following regularity result: If M and M' are smooth generic submanifolds of CN and CN' respectively, where N and N' are not necessarily equal, and if M is minimal, then every Ck-CR-map from M into M which is k-nondegenerate is smooth. As an application, every CR diffeomorphism of k-nondegenerate minimal submanifolds in CN of class Ck is smooth.
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