scholarly journals Real hypersurfaces of non--flat complex space forms in terms of the Jacobi structure operator

2015 ◽  
Vol 87 (1-2) ◽  
pp. 175-189 ◽  
Author(s):  
THEOHARIS THEOFANIDIS ◽  
PH. J. XENOS
Keyword(s):  
Complex Space ◽  
Real Hypersurfaces ◽  
Space Forms ◽  
Jacobi Structure ◽  
Complex Space Forms

REAL HYPERSURFACES OF NON-FLAT COMPLEX SPACE FORMS WITH GENERALIZED ξ-PARALLEL JACOBI STRUCTURE OPERATOR

2015 ◽  
Vol 58 (3) ◽  
pp. 677-687
Author(s):  
TH. THEOFANIDIS
Keyword(s):  
Tangent Space ◽  
Complex Space ◽  
Real Hypersurfaces ◽  
Space Forms ◽  
Jacobi Structure ◽  
Complex Space Forms ◽  
First Time

AbstractThe aim of the present paper is the classification of real hypersurfaces M equipped with the condition Al = lA, l = R(., ξ)ξ, restricted in a subspace of the tangent space TpM of M at a point p. This class is large and difficult to classify, therefore a second condition is imposed: (∇ξl)X = ω(X)ξ + ψ(X)lX, where ω(X), ψ(X) are 1-forms. The last condition is studied for the first time and is much weaker than ∇ξl = 0 which has been studied so far. The Jacobi Structure Operator satisfying this weaker condition can be called generalized ξ-parallel Jacobi Structure Operator.

Real hypersurfaces of non-flat complex space forms with two generalized conditions on the Jacobi structure operator

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Theoharis Theofanidis
Keyword(s):  
Complex Space ◽  
Space Form ◽  
Real Hypersurfaces ◽  
Hopf Hypersurface ◽  
Almost Contact Metric Structure ◽  
Space Forms ◽  
Almost Contact Metric ◽  
Contact Metric Structure ◽  
Jacobi Structure ◽  
Complex Space Forms

Abstract We aim to classify the real hypersurfaces M in a Kaehler complex space form Mn (c) satisfying the two conditions φ l = l φ , $\varphi l=l\varphi ,$ where l = R ( ⋅ , ξ ) ξ  and  φ $l=R(\cdot ,\xi )\xi \text{ and }\varphi $ is the almost contact metric structure of M, and ( ∇ ξ l ) X = $\left( {{\nabla }_{\xi }}l \right)X=$ ω(X)ξ, where where ω(X) is a 1-form and X is a vector field on M. These two conditions imply that M is a Hopf hypersurface and ω = 0.

Some new results on real hypersurfaces with generalized Tanaka-Webster connection

2019 ◽  
Vol 69 (3) ◽  
pp. 665-674
Author(s):  
Wenjie Wang ◽  
Ximin Liu
Keyword(s):  
Real Hypersurface ◽  
Complex Space ◽  
Shape Operator ◽  
Real Hypersurfaces ◽  
Space Forms ◽  
Complex Dimension ◽  
Nonflat Complex Space Forms ◽  
Complex Space Forms ◽  
Ruled Real Hypersurface

Abstract Let M be a real hypersurface in nonflat complex space forms of complex dimension two. In this paper, we prove that the shape operator of M is transversally Killing with respect to the generalized Tanaka-Webster connection if and only if M is locally congruent to a type (A) or (B) real hypersurface. We also prove that shape operator of M commutes with Cho operator on holomorphic distribution if and only if M is locally congruent to a ruled real hypersurface.

scholarly journals On a New type of Tensor on Real Hypersurfaces in Non-Flat Complex Space Forms

Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 559
Author(s):  
George Kaimakamis ◽  
Konstantina Panagiotidou
Keyword(s):  
Curvature Tensor ◽  
Complex Space ◽  
Three Dimensional ◽  
Real Hypersurfaces ◽  
Weyl Curvature ◽  
Space Forms ◽  
Hopf Hypersurfaces ◽  
Weyl Curvature Tensor ◽  
New Type ◽  
Complex Space Forms

In this paper the notion of ∗ -Weyl curvature tensor on real hypersurfaces in non-flat complex space forms is introduced. It is related to the ∗ -Ricci tensor of a real hypersurface. The aim of this paper is to provide two classification theorems concerning real hypersurfaces in non-flat complex space forms in terms of ∗ -Weyl curvature tensor. More precisely, Hopf hypersurfaces of dimension greater or equal to three in non-flat complex space forms with vanishing ∗ -Weyl curvature tensor are classified. Next, all three dimensional real hypersurfaces in non-flat complex space forms, whose ∗ -Weyl curvature tensor vanishes identically are classified. The used methods are based on tools from differential geometry and solving systems of differential equations.

Derivatives on Real Hypersurfaces of Two-Dimensional Non-flat Complex Space Forms

2017 ◽  
Vol 14 (2) ◽  
Author(s):  
George Kaimakamis ◽  
Konstantina Panagiotidou ◽  
Juan de Dios Pérez
Keyword(s):  
Complex Space ◽  
Real Hypersurfaces ◽  
Two Dimensional ◽  
Space Forms ◽  
Complex Space Forms

scholarly journals Ruled real hypersurfaces of complex space forms

2010 ◽  
Vol 33 (1) ◽  
pp. 123-134 ◽  
Author(s):  
Tatsuyoshi Hamada ◽  
Jun-ichi Inoguchi
Keyword(s):  
Complex Space ◽  
Real Hypersurfaces ◽  
Space Forms ◽  
Ruled Real Hypersurfaces ◽  
Complex Space Forms
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