Results 221 to 230 of about 10,472 (250)

Chen inequalities on lightlike hypersurfaces of a GRW spacetime

International Journal of Geometric Methods in Modern Physics, 2021
In this paper, we introduce [Formula: see text]-Ricci curvature and [Formula: see text]-scalar curvature on lightlike hypersurfaces of a GRW spacetime. Using these curvatures, we establish some inequalities for lightlike hypersurfaces of a GRW spacetime. Using these inequalities, we obtain some characterizations on lightlike hypersurfaces.
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SLANT IMMERSIONS OF COMPLEX SPACE FORMS AND CHEN'S INEQUALITY

Acta Mathematica Scientia, 2005
The authors present some results about slant submanifolds.
Li, Guanghan, Wu, Chuanxi
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B.-Y. CHEN INEQUALITIES FOR SUBMANIFOLDS IN GENERALIZED COMPLEX SPACE FORMS [PDF]

Bulletin of the Korean Mathematical Society, 2003
Some relationships between intrinsic and extrinsic invariants of submanifolds in generalized space forms are studied. They are established for slant, totally real and invariant submanifolds in generalized complex space forms, complex space forms and RK-manifolds.
Jeong-Sik Kim
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Chen’s first inequality for Riemannian maps

Annales Polonici Mathematici, 2016
Summary: We obtain a basic Chen inequality for Riemannian maps between Riemannian manifolds.
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Chen Inequalities for Isotropic Submanifolds in Pseudo-Riemannian Space Forms

International Electronic Journal of Geometry, 2023
The class of isotropic submanifolds in pseudo-Riemannian manifolds is a distinguished family of submanifolds; they have been studied by several authors. In this article we establish Chen inequalities for isotropic immersions. An example of an isotropic immersion for which the equality case in the Chen first inequality holds is given.
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Chen–Ricci Inequality for CR-Warped Products and Related Open Problems

Mediterranean Journal of Mathematics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Abdulqader Mustafa, Siraj Uddin
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Β. Y. CHEN INEQUALITIES FOR SLANT SUBMANIFOLDS IN COMPLEX SPACE FORMS

Demonstratio Mathematica, 1999
The reviewer introduces in [Japan. J. Math. 26, No. 1, 105-127 (2000)] a string of new Riemannian invariants, denoted by \(\delta(n_1,\ldots,n_k)\), and establishes sharp inequalities between the invariants and the squared mean curvature for an arbitrary submanifold in a real space form.
Ion Mihai
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Chen Inequalities for Submanifolds of Kenmotsu Space Forms

Infosys Science Foundation Series
Prakasha D G, Inan Ünal, D G Prakasha
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B.Y. Chen inequalities for slant submanifolds in Sasakian space forms

Rendiconti Del Circolo Matematico Di Palermo, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Oiaga, Adela, Cioroboiu, Dragoş
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BETTER BOUNDS IN CHEN’S INEQUALITIES FOR THE EULER CONSTANT

Bulletin of the Australian Mathematical Society, 2015
In this paper we improve the inequalities obtained by Chen in 2009 for the Euler–Mascheroni constant.
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