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Homogeneous hypersurfaces in complex hyperbolic spaces

Jurgen Berndt, +1 more
- 01 Feb 2009 - 
- Vol. 138, Iss: 1, pp 129-150
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TLDR
In this paper, the geometry of homogeneous hypersurfaces and their focal sets in complex hyperbolic spaces is studied and a characterization of the focal set in terms of its second fundamental form is provided.
Abstract
We study the geometry of homogeneous hypersurfaces and their focal sets in complex hyperbolic spaces. In particular, we provide a characterization of the focal set in terms of its second fundamental form and determine the principal curvatures of the homogeneous hypersurfaces together with their multiplicities.

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Citations
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Polar actions on complex hyperbolic spaces

TL;DR: In this paper, the authors classified polar actions on complex hyperbolic spaces up to orbit equivalence and showed that there are finitely many examples of polar, non-hyperpolar actions on each compact symmetric space of rank one.
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Non-Hopf real hypersurfaces with constant principal curvatures in complex space forms

TL;DR: In this article, real hypersurfaces in complex space forms with constant principal curvatures and whose Hopf vector field has two nontrivial projections onto the principal curvature spaces are classified.
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Polar actions on complex hyperbolic spaces

TL;DR: In this article, the authors classify polar actions on complex hyperbolic spaces up to orbit equivalence and show that the polar actions can be classified into two classes: (1) this article and (2)
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Isoparametric hypersurfaces in Damek-Ricci spaces

TL;DR: The concept of generalized Kahler angle was introduced in this paper to characterize isoparametric families of hypersurfaces in Damek-Ricci spaces, and it was shown that these examples are inhomogeneous and have nonconstant principal curvatures.
Journal ArticleDOI

Real hypersurfaces with constant principal curvatures in complex space forms

TL;DR: In this paper, the classification result of real hypersurfaces with constant principal curvatures in nonflat complex space forms and whose Hopf vector field has nontrivial projection onto two eigenspaces of the shape operator was presented.
References
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Journal ArticleDOI

On homogeneous real hypersurfaces in a complex projective space

TL;DR: In this paper, the authors considered the problem of determining homogeneous real hypersurfaces in a complex projective space Pn(C) of complex dimension n(^>2) which are orbits under analytic subgroups of the projective unitary group PU(n-\\-\\)>.
Journal ArticleDOI

Focal sets and real hypersurfaces in complex projective space

TL;DR: In this paper, the location of the focal points of a real submanifold is defined in terms of its second fundamental form, and the rank of a focal map onto a sheet of focal points corresponding to a principal curvature is computed using the Codazzi equation.
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