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2016•arXiv (Cornell University)Open access

Regularity of infinitesimal CR automorphisms

Stefan Fürdös, Bernhard Lamel

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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 $λX$ 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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What this paper is about

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 $λX$ 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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Available 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 $λX$ is smooth for all multipliers $λ$. As an application, we study the regularity of infinitesimal automorphisms of certain embedded hypersurfaces of infinite type.

Key concepts: Infinitesimal, Automorphism, Mathematics, Pure mathematics, Extension (predicate logic), Lambda, Type (biology), Mathematical analysis

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