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Homology groups in CR-warped products of complex space forms [PDF]

open access: yesHeliyon
In the present paper, by using the result of Lawson-Simons [15], we adopt a different technique to show that there are no stable integral q-currents and a non-trivial homology group in a compact oriented CR-warped product submanifold Nn in a complex ...
Yanlin Li   +4 more
doaj   +2 more sources

Generalized Sasakian Space Forms Which Are Realized as Real Hypersurfaces in Complex Space Forms

open access: yesMathematics, 2020
We prove a classification theorem of the generalized Sasakian space forms which are realized as real hypersurfaces in complex space forms.
Alfonso Carriazo   +2 more
doaj   +3 more sources

Quasi-Einstein Hypersurfaces of Complex Space Forms

open access: yesAdvances in Mathematical Physics, 2020
Based on a well-known fact that there are no Einstein hypersurfaces in a nonflat complex space form, in this article, we study the quasi-Einstein condition, which is a generalization of an Einstein metric, on the real hypersurface of a nonflat complex ...
Xuehui Cui, Xiaomin Chen
doaj   +3 more sources

Commuting Conditions of the k-th Cho operator with the structure Jacobi operator of real hypersurfaces in complex space forms

open access: yesOpen Mathematics, 2015
In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina   +1 more
doaj   +2 more sources

On the $$\Delta $$-property for complex space forms [PDF]

open access: yesAbhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 2021
Inspired by the work of Z. Lu and G. Tian [8], A. Loi, F. Salis and F. Zuddas address in [5] the problem of studying those Kähler manifolds satisfying the $Δ$-property, i.e. such that on a neighborhood of each of its points the $k$-th power of the Kähler Laplacian is a polynomial function of the complex Euclidean Laplacian, for all positive integer $k$.
openaire   +3 more sources

Complex space forms immersed in complex space forms [PDF]

open access: yesTransactions of the American Mathematical Society, 1976
We determine all the isometric immersions of complex space forms into complex space forms. Our result can be considered as the local version of a well-known result of Calabi.
Nakagawa, H., Ogiue, K.
openaire   +1 more source

Differential Geometry of Submanifolds in Complex Space Forms Involving δ-Invariants

open access: yesMathematics, 2022
One of the fundamental problems in the theory of submanifolds is to establish optimal relationships between intrinsic and extrinsic invariants for submanifolds.
Bang-Yen Chen   +2 more
doaj   +1 more source

CR-SUBMANIFOLDS OF A COMPLEX SPACE FORM [PDF]

open access: yesJournal of Differential Geometry, 1981
Publisher Summary This chapter presents some fundamental formulas for submanifolds of a Kaehlerian manifold, and in particular for those of a complex space form, and discusses the CR-submanifolds and generic submanifolds. The chapter discusses various theorems related to CR-submanifolds. Theorem 1 is fundamental in the study of CR-submanifolds.
Bejancu, Aurel   +2 more
openaire   +2 more sources

Vanishing Homology of Warped Product Submanifolds in Complex Space Forms and Applications

open access: yesMathematics, 2022
In this paper, we prove the nonexistence of stable integral currents in compact oriented warped product pointwise semi-slant submanifold Mn of a complex space form M˜(4ϵ) under extrinsic conditions which involve the Laplacian, the squared norm gradient ...
Ali H. Alkhaldi   +3 more
doaj   +1 more source

Characterization of Lagrangian Submanifolds by Geometric Inequalities in Complex Space Forms

open access: yesAdvances in Mathematical Physics, 2021
In this paper, we give an estimate of the first eigenvalue of the Laplace operator on a Lagrangian submanifold Mn minimally immersed in a complex space form.
Lamia Saeed Alqahtani
doaj   +1 more source

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