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HIGHER ORDER SYMMETRIES OF REAL HYPERSURFACES IN C-3

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KOLÁŘ Martin MEYLAN-RIVIER Francine Antoinette

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj Proceedings of the American Mathematical Society
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Doi http://dx.doi.org/10.1090/proc/13090
Obor Obecná matematika
Klíčová slova Catlin multitype; Levi degenerate manifold; CR automorphisms
Popis We study nonlinear automorphisms of Levi degenerate hypersurfaces of finite multitype. By results of Kolar, Meylan, and Zaitsev in 2014, the Lie algebra of infinitesimal CR automorphisms may contain a graded component consisting of nonlinear vector fields of arbitrarily high degree, which has no analog in the classical Levi nondegenerate case, or in the case of finite type hypersurfaces in C-2. We analyze this phenomenon for hypersurfaces of finite Catlin multitype with holomorphically nondegenerate models in complex dimension three. The results provide a complete classification of such manifolds. As a consequence, we show on which hypersurfaces 2-jets are not sufficient to determine an automorphism. The results also confirm a conjecture about the origin of nonlinear automorphisms of Levi degenerate hypersurfaces, formulated by the first author for an AIM workshop in 2010.
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