Results 31 to 40 of about 112,777 (272)

Affine differential geometry of osculating hypersurfaces

open access: yesLietuvos Matematikos Rinkinys, 2012
Osculating surfaces of second order have been studied in classical affine differential geometry [1].  In this article we generalize this notion to osculating hypersurfaces of higher order of hypersurfaces in Euclidean n-space.
Kazimieras Navickis
doaj   +1 more source

An approach to energy and elastic for curves with extended Darboux frame in Minkowski space

open access: yesAIMS Mathematics, 2020
In this paper, we construct the energy for the ED-frame field of the first and second kind on an orientable hypersurface in Minkowski space. We obtain the geometric properties of some graphics by way of energy.
Talat Körpinar, Yasin Ünlütürk
doaj   +1 more source

Hypersurfaces of a Sasakian manifold - revisited

open access: yesJournal of Inequalities and Applications, 2021
We study orientable hypersurfaces in a Sasakian manifold. The structure vector field ξ of a Sasakian manifold determines a vector field v on a hypersurface that is the component of the Reeb vector field ξ tangential to the hypersurface, and it also gives
Sharief Deshmukh   +3 more
doaj   +1 more source

Extended Object Tracking with Random Hypersurface Models [PDF]

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2013
The random hypersurface model (RHM) is introduced for estimating a shape approximation of an extended object in addition to its kinematic state. An RHM represents the spatial extent by means of randomly scaled versions of the shape boundary. In doing so,
M. Baum, U. Hanebeck
semanticscholar   +1 more source

Factorial Hypersurfaces [PDF]

open access: yesProceedings of the Steklov Institute of Mathematics, 2017
18 pages.
openaire   +4 more sources

Characterizing non-totally geodesic spheres in a unit sphere

open access: yesAIMS Mathematics, 2023
A concircular vector field $ \mathbf{u} $ on the unit sphere $ \mathbf{S}^{n+1} $ induces a vector field $ \mathbf{w} $ on an orientable hypersurface $ M $ of the unit sphere $ \mathbf{S}^{n+1} $, simply called the induced vector field on the ...
Ibrahim Al-Dayel   +2 more
doaj   +1 more source

Doubly covariant action principle of singular hypersurfaces in general relativity and scalar-tensor theories [PDF]

open access: yes, 2001
An action principle of singular hypersurfaces in general relativity and scalar-tensor type theories of gravity in the Einstein frame is presented without assuming any symmetry.
Mukohyama, Shinji
core   +2 more sources

The Gauss Map and the Third Laplace-Beltrami Operator of the Rotational Hypersurface in 4-Space

open access: yesSymmetry, 2018
We study and examine the rotational hypersurface and its Gauss map in Euclidean four-space E 4 . We calculate the Gauss map, the mean curvature and the Gaussian curvature of the rotational hypersurface and obtain some results.
Erhan Güler   +2 more
semanticscholar   +1 more source

Hypersurfaces of cohomogeneity one and hypersurfaces of revolution

open access: yesDifferential Geometry and its Applications, 2004
AbstractIn this paper, we study hypersurfaces f:Mn→Rn+1,n⩾3, where Mn is a G-cohomogeneity one Riemannian manifold such that the principal orbits of G are umbilical submanifolds of M. In (Ann. Global Anal. Geom. 13 (1995) 169–184), under the assumptions that n⩾4 and M is compact, the authors prove that such a hypersurface must be of revolution.
Jose Adonai Pereira Seixas   +1 more
openaire   +2 more sources

Geodesic webs of hypersurfaces [PDF]

open access: yesDoklady Mathematics, 2009
11 pages, in ...
Lychagin, Valentin V.   +1 more
openaire   +4 more sources

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