Regularity of infinitesimal CR automorphisms
Abstract
We study the regularity of infinitesimal CR automorphisms of abstract CR structures which possess a certain microlocal extension and show that there are smooth multipliers, completely determined by the CR structure, such that if X is such an infinitesimal CR automorphism, then λ X is smooth for all multipliers λ. As an application, we study the regularity of infinitesimal automorphisms of certain embedded hypersurfaces of infinite type.
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