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Displaying 321 – 340 of 764

Complete Riemannian manifolds admitting a pair of Einstein-Weyl structures

Amalendu Ghosh (2016)

Mathematica Bohemica

We prove that a connected Riemannian manifold admitting a pair of non-trivial Einstein-Weyl structures $(g, \pm ω)$ with constant scalar curvature is either Einstein, or the dual field of $ω$ is Killing. Next, let $(M^{n}, g)$ be a complete and connected Riemannian manifold of dimension at least $3$ admitting a pair of Einstein-Weyl structures $(g, \pm ω)$ . Then the Einstein-Weyl vector field $E$ (dual to the $1$ -form $ω$ ) generates an infinitesimal harmonic transformation if and only if $E$ is Killing.

Complete solution of Hadamard's problem for the scalar wave equation on Petrov type III space-times

S. R. Czapor, R. G. McLenaghan, F. D. Sasse (1999)

Annales de l'I.H.P. Physique théorique

Complete spacelike hypersurfaces with constant scalar curvature

Schi Chang Shu (2008)

Archivum Mathematicum

In this paper, we characterize the $n$ -dimensional $(n \geq 3)$ complete spacelike hypersurfaces $M^{n}$ in a de Sitter space $S_{1}^{n + 1}$ with constant scalar curvature and with two distinct principal curvatures one of which is simple.We show that $M^{n}$ is a locus of moving $(n - 1)$ -dimensional submanifold $M_{1}^{n - 1} (s)$ , along $M_{1}^{n - 1} (s)$ the principal curvature $λ$ of multiplicity $n - 1$ is constant and $M_{1}^{n - 1} (s)$ is umbilical in $S_{1}^{n + 1}$ and is contained in an $(n - 1)$ -dimensional sphere $S^{n - 1} (c (s)) = E^{n} (s) \cap S_{1}^{n + 1}$ and is of constant curvature ${(\frac{d {log | λ^{2} - (1 - R) |^{1 / n}}}{d s})}^{2} - λ^{2} + 1$ ,where $s$ is the arc length of an orthogonal trajectory of the family...

Complete space-like submanifolds in a de Sitter space with parallel mean curvature vector.

Qing-ming Cheng (1991)

Mathematische Zeitschrift

Complete space-like submanifolds in de Sitter space.

Liu, X. (2001)

Acta Mathematica Universitatis Comenianae. New Series

Complete space-like submanifolds with constant scalar curvature in a de Sitter space.

Shichang, Shu, Sanyang, Liu (2004)

Balkan Journal of Geometry and its Applications (BJGA)

Completeness of the polynomial invariants of compact groups

G. Łubczonok (1973)

Annales Polonici Mathematici

Complétude des deux-tores lorentziens

Yves Carrière, Luc Rozoy (1993/1994)

Séminaire de théorie spectrale et géométrie

Complétude des variétés Lorentziennes à courbure constante.

Bruno Klingler (1996)

Mathematische Annalen

Complétude et flots nul-géodésibles en géométrie lorentzienne

Pierre Mounoud (2004)

Bulletin de la Société Mathématique de France

On étudie la complétude géodésique des flots nul-prégéodésiques sur les variétés lorentziennes compactes, ce qui donne une obstruction à être nul-géodésique. On montre que lorsque l’orthogonal du champ de vecteurs engendrant le flot considéré s’intègre en un feuilletage $ℱ$ , la complétude du flot se lit sur l’holonomie de $ℱ$ . On montre ainsi qu’il n’existe pas de flots nul-géodésiques lisses sur $S^{3}$ . On montre aussi qu’un $2$ -tore lorentzien est nul-complet si et seulement si ses feuilletages de type lumière...

Complex affine transversal bundles for surfaces in $ℂ^{4}$ .

Witowicz, Paweł (2002)

Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica

Complex Analysis, Maximal Immersions and Metric Singularities.

Jens Chr. Larsen (1996)

Monatshefte für Mathematik

Complex analysis methods in the theory of infinitesimal bendings of surfaces with a flat point.

Usmanov, Z.D. (1997)

Memoirs on Differential Equations and Mathematical Physics

Complex Analytic Curves and Maximal Surfaces.

K. Abe, M.A. Magid (1989)

Monatshefte für Mathematik

Complex characteristic coordinates and tangential Cauchy-Riemann equations

Aldo Andreotti, C. Denson Hill (1972)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

Complex cohomology automorphisms of compact homogeneous spaces of positive Euler characteristic

Papadima, Stefan (1987)

Proceedings of the Winter School "Geometry and Physics"

Complex conformal connection on the locally conformal Kähler manifolds

Mileva Prvanović (2003)

Kragujevac Journal of Mathematics

Complex Contact Structures and the First Eigenvalue of the Dirac Operator on Kähler Manifolds.

K.-D. Kirchberg, U. Semmelmann (1995)

Geometric and functional analysis

Complex geodesics and Finsler metrics

Marco Abate, Giorgio Patrizio (1995)

Banach Center Publications

Complex geodesics and isometries in Cartan domains of type four

Edoardo Vesentini (1995)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

Holomorphic maps of Cartan domains of type four preserving the supports of complex geodesics are characterized, providing, in particular, a new description of holomorphic isometries.

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