Results 91 to 100 of about 179 (133)

Foliations of lightlike hypersurfaces and their physical interpretation

Open Mathematics, 2012
Duggal Krishan
doaj   +1 more source

Codazzi and totally umbilical hypersurfaces in Sol1 4

Codazzi and totally umbilical hypersurfaces in Sol1 4
In this paper, we prove the non-existence of Codazzi and totally umbilical hypersurfaces, especially totally geodesic hypersurfaces, in the 4-dimensional model space Sol(1)(4).
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REMARKS ON MANIFOLDS ADMITTING TOTALLY UMBILICAL HYPERSURFACES

Demonstratio Mathematica, 1978
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ON CONTACT METRIC HYPERSURFACES IN A REAL SPACE FORM

, 2018
For a (2n + 1)-dimensional N(k)-contact metric hypersurface in a real space form (M) over tilde (c), some main results are obtained as follows: (1) if k - c > 0 then M is totally umbilical, and consequently, either M is a Sasakian manifold of constant ...
Tripathi, MM, Hong, S, Ozgur, C
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Constant mean curvature hypersurfaces with constant angle in semi-Riemannian space forms

, 2016
We study constant angle semi-Riemannian hypersurfaces Mimmersed in semi-Riemannian space forms, where the constant angle is defined in terms of a closed and conformal vector field Zin the ambient space form.
GABRIEL RUIZ HERNANDEZ, JOSE MATIAS NAVARRO SOZA, DIDIER ADAN SOLIS GAMBOA   +2 more
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Additional Proceedings to the 56^th Annual Meeting of the Particle Therapy Cooperative Group (PTCOG), 8-13 May 2017. [PDF]

Int J Part Ther, 2017
europepmc   +1 more source

Biharmonic hypersurfaces in Riemannian manifolds

, 2009
We study biharmonic hypersurfaces in a generic Riemannian manifold. We first derive an invariant equation for such hypersurfaces generalizing the biharmonic hypersurface equation in space forms studied by Jiang, Chen, Caddeo, Montaldo, and Oniciuc.
Ye-lin Ou
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Biharmonic Legendre Curves on Totally η-Umbilical, Ruled, and Hopf Hypersurfaces in Four-Dimensional Complex Space Forms

Symmetry
The main purpose of the present paper is to investigate biharmonic Legendre curves on hypersurfaces in four-dimensional complex space forms. We examine the necessary conditions for the existence of such curves on totally η-umbilical, ruled, and Hopf hypersurfaces for which the shape operator AN satisfies a symmetry property.
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Almost Kenmotsu manifolds with conformal Reeb foliation

, 2011
We consider almost Kenmotsu manifolds with conformal Reeb foliation. We prove that such a foliation produces harmonic morphisms,we study the k-nullity distributions and we discuss the isometric immersion of such a manifold M as hypersurface in a real ...
PASTORE, Anna Maria, SALTARELLI V.
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Characterization of totally umbilic hypersurfaces in a space form by circles

Characterization of totally umbilic hypersurfaces in a space form by circles
論文(Article)
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