Results 121 to 130 of about 8,796 (232)

On the RICCI Metric of a Hypersurface

open access: yesMathematische Nachrichten, 1991
Assume the Riemannian manifold \((M,\langle\;,\;\rangle)\) to have positive Ricci curvature; then by the Ricci tensor a second Riemannian metric, denoted by \(\langle\;,\;\rangle_ *\), is defined on \(M\). In the present paper the author studies this metric on ovaloids in Euclidean space \(E^{n+1}\).
openaire   +2 more sources

Almost-toric hypersurfaces [PDF]

open access: yesBeiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry, 2015
12 pages, 2 ...
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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

Extension of holomorphic functions from one side of a hypersurface [PDF]

open access: yes, 2005
We give a new proof of former results by G. Zampieri and the author on extension of holomorphic functions from one side of a real hypersurface M of Cn in the presence of an analytic disc tangent to M, attached to ̄ but not to M. Our method enables us
BARACCO, LUCA, Luca Baracco
core   +1 more source

Indecomposable syzygy-modules of high rank over hypersurface rings [PDF]

open access: yes, 1988
In this paper we construct certain indecomposable syzygy modules over graded hypersurface rings and give a lower bound of their rank.Thereby we show that there is no upper bound for the ranks of the indecomposable maximal Cohen-Macaulay modules over a ...
Herzog, Jürgen, Sanders, Herbert
core   +1 more source

On the Zeta Function of a Hypersurface: II [PDF]

open access: yesThe Annals of Mathematics, 1962
The author continues his strikingly original work on the zeta function of an algebraic variety defined over a finite field. Here he considers a nonsingular hypersurface \(H\) of degree \(d\) in projective \(n\)-space over the field \(k=GF(q)\). The Weil conjectures predict that its zeta function has the form \[ \zeta(H,t)=P(t)^{(-1)^n}/\prod_0^{n-1}(1 ...
openaire   +1 more source

Initial logarithmic Lie algebras of hypersurface singularities [PDF]

open access: yes, 2009
We introduce a Lie algebra of initial terms of logarithmic vector fields along a hypersurface singularity. Extending the formal structure theorem in [GS06, Thm. 5.4], we show that the completely reducible part of its linear projection lifts formally to a
J.M. Granger, M. Schulze
core   +1 more source

Sur une hypersurface cubique de l'espace à quatre dimensions [PDF]

open access: yes, 1970
Construction de la variété image d'une involution cyclique du troisième ordre appartenant à une hypersurface cubique de l'espace à quatre dimensions. Applications.Godeaux Lucien. Sur une hypersurface cubique de l'espace à quatre dimensions.
Lucien Godeaux, Godeaux, Lucien
core   +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  

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

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