scholarly journals Flow of real hypersurfaces by the trace of the Levi form

1999 ◽  
Vol 6 (6) ◽  
pp. 645-661 ◽  
Author(s):  
Gerhard Huisken ◽  
Wilhelm Klingenberg
Keyword(s):  
Levi Form ◽  
Real Hypersurfaces

scholarly journals Non-degenerate real hypersurfaces in complex manifolds admitting large groups of pseudo-conformal transformations. I

1976 ◽  
Vol 62 ◽  
pp. 55-96 ◽  
Author(s):  
Keizo Yamaguchi
Keyword(s):  
Complex Manifold ◽  
Real Hypersurface ◽  
Levi Form ◽  
Real Hypersurfaces ◽  
Conformal Transformations ◽  
Complex Manifolds ◽  
Real Analytic ◽  
Large Groups

Let S (resp. S′) be a (real) hypersurface (i.e. a real analytic sub-manifold of codimension 1) of an n-dimensional complex manifold M (resp. M′). A homeomorphism f of S onto S′ is called a pseudo-conformal homeomorphism if it can be extended to a holomorphic homeomorphism of a neighborhood of S in M onto a neighborhood of S′ in M. In case such an f exists, we say that S and S′ are pseudo-conformally equivalent. A hypersurface S is called non-degenerate (index r) if its Levi-form is non-degenerate (and its index is equal to r) at each point of S.

LEVI-UMBILICAL REAL HYPERSURFACES IN A COMPLEX SPACE FORM

2016 ◽  
Vol 229 ◽  
pp. 99-112 ◽  
Author(s):  
JONG TAEK CHO ◽  
MAKOTO KIMURA
Keyword(s):  
Complex Space ◽  
Space Form ◽  
Levi Form ◽  
Complex Space Form ◽  
Real Hypersurfaces ◽  
Complex Projective Plane ◽  
Nonzero Constant ◽  
Local Construction ◽  
Complex Projective

We give a classification of Levi-umbilical real hypersurfaces in a complex space form $\widetilde{M}_{n}(c)$, $n\geqslant 3$, whose Levi form is proportional to the induced metric by a nonzero constant. In a complex projective plane $\mathbb{C}\mathbb{P}^{2}$, we give a local construction of such hypersurfaces and moreover, we give new examples of Levi-flat real hypersurfaces in $\mathbb{C}\mathbb{P}^{2}$.

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