Every real ellipsoid in ℂ² admits CR umbilical points

Author:

Huang Xiaojun,Ji Shanyu

Abstract

We prove that every real ellipsoid M C 2 M\subset \mathbb {C}^2 admits at least four umbilical points, which can be compared to the result of Webster that a generic real ellipsoid in C n \mathbb {C}^n with n 3 n\ge 3 does not admit any umbilical point.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Cited by 10 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. The CR umbilical locus of a real ellipsoid in C2;Journal of Mathematical Analysis and Applications;2023-02

2. Projective-umbilic points of circular real hypersurfaces in $\mathbb {C}^2$;Proceedings of the American Mathematical Society;2020-09-18

3. A new invariant equation for umbilical points on real hypersurfaces in $\mathbb{C}^2$ and applications;Communications in Analysis and Geometry;2019

4. Parametric CR-umbilical locus of ellipsoids inC2;Comptes Rendus Mathematique;2018-02

5. A family of compact strictly pseudoconvex hypersurfaces in $\mathbb{C}^2$ without umbilical points;Mathematical Research Letters;2018

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