Real Hypersurfaces with Two Principal Curvatures in Complex Projective and Hyperbolic Planes

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• 作者：José Carlos Díaz-Ramos ; Miguel Domínguez-Vázquez…
• 关键词：Complex projective space ; Complex hyperbolic space ; Polar action ; Principal curvatures ; Parallel mean curvature ; Non ; Hopf real hypersurface
• 刊名：The Journal of Geometric Analysis
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：27
• 期：1
• 页码：442-465
• 全文大小：
• 刊物类别：Mathematics and Statistics
• 刊物主题：Differential Geometry; Convex and Discrete Geometry; Fourier Analysis; Abstract Harmonic Analysis; Dynamical Systems and Ergodic Theory; Global Analysis and Analysis on Manifolds;
• 出版者：Springer US
• ISSN：1559-002X
• 卷排序：27

文摘

We find the first examples of real hypersurfaces with two nonconstant principal curvatures in complex projective and hyperbolic planes, and we classify them. It turns out that each such hypersurface is foliated by equidistant Lagrangian flat surfaces with parallel mean curvature or, equivalently, by principal orbits of a cohomogeneity two polar action.