Results 101 to 110 of about 72,858 (181)

Canonical liftings of Calabi–Yau hypersurfaces: Dwork hypersurfaces

open access: yesmanuscripta mathematica
Abstract We explicitly compute canonical liftings modulo $$p^2$$ p 2 in a sense of Achinger–Zdanowicz of Dwork hypersurfaces.
openaire   +2 more sources

UNIRATIONALITY OF CUBIC HYPERSURFACES [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2002
Segre proved that a smooth cubic surface over Q is unirational iff it has a rational point. We prove that the result also holds for cubic hypersurfaces over any field, including finite fields.
openaire   +2 more sources

Extended Darboux frame curvatures of Frenet curves lying on parametric 3-surfaces

open access: yesKuwait Journal of Science, 2019
In this paper, we consider a Frenet curve lying on a parametric hypersurface in 4-dimensional Euclidean space and obtain the expressions of its curvatures with respect to the ...
Bahar Uyar Düldül, Mustafa Düldül
doaj  

Stable H-Minimal Hypersurfaces [PDF]

open access: yesThe Journal of Geometric Analysis, 2013
34 ...
openaire   +3 more sources

The Viro Method for Construction of Piecewise Algebraic Hypersurfaces

open access: yesAbstract and Applied Analysis, 2013
We propose a new method to construct a real piecewise algebraic hypersurface of a given degree with a prescribed smoothness and topology. The method is based on the smooth blending theory and the Viro method for construction of Bernstein-Bézier algebraic
Yisheng Lai, Weiping Du, Renhong Wang
doaj   +1 more source

Hypersurface Arrangements with Generic Hypersurfaces Added

open access: yes
19 pages, 3 figures, 2 ...
Reinke, Bernhard, Wang, Kexin
openaire   +2 more sources

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

Embedded positive constant r-mean curvature hypersurfaces in Mm × R

open access: yesAnais da Academia Brasileira de Ciências, 2005
Let M be an m-dimensional Riemannian manifold with sectional curvature bounded from below. We consider hypersurfaces in the (m + 1)-dimensional product manifold M x R with positive constant r-mean curvature.
Cheng Xu, Rosenberg Harold
doaj  

Modeling the boundaries of the working space of a planar three-link manipulator

open access: yesОмский научный вестник
A study of the boundaries of the working space of a three-link planar manipulator, specified by analytical equations, is carried out. A new geometric interpretation of these samples is proposed.
T. A. Sheveleva, A. A. Lyashkov
doaj   +1 more source

A note about almost contact metric hypersurfaces axioms for almost Hermitian manifolds

open access: yesДифференциальная геометрия многообразий фигур
From 1950s, it is known that an almost contact metric structure is in­duced on an arbitrary oriented hypersurface in an almost Hermitian mani­fold. In accordance with the definition, an almost Hermitian manifold satisfies the axiom of almost contact ...
A. Abu-Saleem   +2 more
doaj   +1 more source

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