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- W2950371937 abstract "We consider the problem of describing the local biholomorphic equivalence class of a real-analytic hypersurface $M$ at a distinguished point $p_0in M$ by giving a normal form for such objects. In order for the normal form to carry useful information about the biholomorphic equivalence class, we shall require that the transformation to normal form is unique modulo some finite dimensional group. A classical result due to Chern--Moser gives such a normal form for Levi nondegenerate hypersurfaces. The main results in this paper concern real-analytic hypersurfaces $M$ in $Bbb C^3$ at certain Levi degenerate points $p_0in M$, namely points at which $M$ is 2-nondegenerate. We give a partial normal form for all such $(M,p_0)$, i.e. a normal form for the data associated with 2-nondegeneracy. We also give a complete formal normal form for such $(M,p_0)$ under the additional condition that the Levi form has rank one at $p_0$. This result, combined with a recent theorem due to the author, M. S. Baouendi, and L. P. Rothschild stating that formal equivalences between real-analytic finitely nondegenerate hypersurfaces converge, gives a description of the biholomorphic equivalence class of a real-analytic hypersurface in $Bbb C^3$ at a point of 2-nondegeneracy where the rank of the Levi form is one." @default.
- W2950371937 created "2019-06-27" @default.
- W2950371937 creator A5078720050 @default.
- W2950371937 date "1997-05-29" @default.
- W2950371937 modified "2023-09-27" @default.
- W2950371937 title "Normal forms and biholomorphic equivalence of real hypersurfaces in C^3" @default.
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