On Chern-Moser normal forms of strongly pseudoconvex hypersurfaces with high-dimensional stability group

Details On Chern-Moser normal forms of strongly pseudoconvex hypersurfaces with high-dimensional stability group On Chern-Moser normal forms of strongly pseudoconvex hypersurfaces with high-dimensional stability group

2007-10-12

arxiv.org/abs/0710.2388v1

Mathematics

Complex Variables

Scientific paper

We explicitly describe germs of strongly pseudoconvex non-spherical real-analytic hypersurfaces $M$ at the origin in $\CC^{n+1}$ for which the group of local CR-automorphisms preserving the origin has dimension $d_0(M)$ equal to either $n^2-2n+1$ with $n\ge 2$, or $n^2-2n$ with $n\ge 3$. The description is given in terms of equations defining hypersurfaces near the origin, written in the Chern-Moser normal form. These results are motivated by the classification of locally homogeneous Levi non-degenerate hypersurfaces in $\CC^3$ with $d_0(M)=1,2$ due to A. Loboda, and complement earlier joint work by V. Ezhov and the author for the case $d_0(M)\ge n^2-2n+2$.

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