Results 11 to 20 of about 1,280 (66)

A survey on Inverse mean curvature flow in ROSSes

open access: yesComplex Manifolds, 2017
In this survey we discuss the evolution by inverse mean curvature flow of star-shaped mean convex hypersurfaces in non-compact rank one symmetric spaces.
Pipoli Giuseppe
doaj   +1 more source

Generalized inequalities on warped product submanifolds in nearly trans-Sasakian manifolds [PDF]

open access: yes, 2014
In this paper, we study warped product submanifolds of nearly trans-Sasakian manifolds. The non-existence of warped product semi-slant submanifolds of type Nθ×fNT is shown, whereas some characterization and new geometric obstructions are obtained for the
Abdulqader Mustafa, S. Uddin, B. Wong
semanticscholar   +1 more source

A geometric flow on null hypersurfaces of Lorentzian manifolds

open access: yesTopological Algebra and its Applications, 2022
We introduce a geometric flow on a screen integrable null hypersurface in terms of its local second fundamental form. We use it to give an alternative proof to the vorticity free Raychaudhuri’s equation for null hypersurface, as well as establishing ...
Massamba Fortuné, Ssekajja Samuel
doaj   +1 more source

Polar Actions on Berger Spheres [PDF]

open access: yes, 2006
The object of this article is to study a torus action on a so-called Berger sphere. We also make some comments on polar actions on naturally reductive homogeneous spaces. Finally, we prove a rigidity-type theorem for Riemannian manifolds carrying a polar
ANTONIO J. DI SCALA   +5 more
core   +1 more source

On submersion and immersion submanifolds of a quaternionic projective space

open access: yesActa Universitatis Sapientiae: Mathematica, 2016
We study submanifolds of a quaternionic projective space, it is of great interest how to pull down some formulae deduced for submanifolds of a sphere to those for submanifolds of a quaternionic projective space.
Abedi Esmail, Nazari Zahra
doaj   +1 more source

Totally geodesic property of the unit tangent sphere bundle with g-natural metrics

open access: yesActa Universitatis Sapientiae: Mathematica, 2018
In this paper, we consider the tangent bundle of a Riemannian manifold (M, g) with g-natural metrics and among all of these metrics, we specify those with respect to which the unit tangent sphere bundle with induced g-natural metric is totally geodesic ...
Peyghan Esmaeil, Firuzi Farshad
doaj   +1 more source

On the structure vector field of a real hypersurface in complex quadric

open access: yesOpen Mathematics, 2018
From the notion of Jacobi type vector fields for a real hypersurface in complex quadric Qm we prove that if the structure vector field is of Jacobi type it is Killing when the real hypersurface is either Hopf or compact.
Dios Pérez Juan de
doaj   +1 more source

Chen’s inequalities for submanifolds in (κ, μ)-contact space form with a semi-symmetric metric connection

open access: yesOpen Mathematics, 2018
In this paper, we obtain Chen’s inequalities for submanifolds in (κ, μ)-contact space form endowed with a semi-symmetric metric connection.
Ahmad Asif   +3 more
doaj   +1 more source

Totally Geodesic Submanifolds in Tangent Bundle with g - natural Metric [PDF]

open access: yes, 2013
In the paper we investigate submanifolds in a tangent bundle endowed with g-natural metric G, defined by a vector field on a base manifold. We give a sufficient condition for a vector field on M to defined totally geodesic submanifold in (TM,G).
Ewert-Krzemieniewski, Stanisław
core   +1 more source

On Unitary Invariant Strongly Pseudoconvex Complex Landsberg Metrics

open access: yes, 2016
In this paper, we prove that a unitary invariant strongly pseudoconvex complex Finsler metric is a complex Landsberg metric if and if only if it comes from a unitary invariant Hermitian metric.
Yong He, Chunping Zhong
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy