Results 111 to 120 of about 20,711 (219)

Pseudo-Riemannian T-duals of compact Riemannian reductive spaces

, 2007
The aim of this paper is the construction of pseudo-Riemannian homogeneous spaces with special curvature properties such as Einstein spaces etc. using corresponding known compact Riemannian ones.
Ines Kath
core  

On submanifolds with 2-Type Pseudo-Hyperbolic Gauss Map in Pseudo-Hyperbolic space

, 2017
In this paper, we study pseudo-Riemannian submanifolds of a pseudo-hyperbolic space Hsm-1(-1)?Es+1m with 2-type pseudo-hyperbolic Gauss map. We give a characterization of proper pseudo-Riemannian hypersurfaces in Hsn+1(-1)?Es+1n+2 with non-zero constant ...
Dursun, Uğur, Şen, Rüya Yeğin
core   +1 more source

Differentiable Manifolds and Geometric Structures

Mathematics
This editorial presents 26 research articles published in the Special Issue entitled Differentiable Manifolds and Geometric Structures of the MDPI Mathematics journal, which covers a wide range of topics particularly from the geometry of (pseudo ...
Adara M. Blaga
doaj   +1 more source

Essential Parabolic Structures and Their Infinitesimal Automorphisms

Symmetry, Integrability and Geometry: Methods and Applications, 2011
Using the theory of Weyl structures, we give a natural generalization of the notion of essential conformal structures and conformal Killing fields to arbitrary parabolic geometries.
Jesse Alt
doaj   +1 more source

Pseudo-Q-symmetric Riemannian manifolds

, 2013
In this paper, we introduce a new kind of tensor whose trace is the well-known Z tensor defined by the present authors. This is named Q tensor: the displayed properties of such tensor are investigated. A new kind of Riemannian manifold that embraces both
SUH, YOUNG JIN, MANTICA, CARLO ALBERTO
core   +1 more source

A spinorial energy functional: Critical points and gradient flow

, 2012
On the universal bundle of unit spinors we study a natural energy functional whose critical points, if dimM C 3, are precisely the pairs (g,φ) consisting of a Ricci-flat Riemannian metric g together with a parallel g-spinor φ.
Hartmut Weiss, Ammann, Bernd, Bernd Ammann, Weiss, Hartmut, Frederik Witt, Witt, Frederik   +5 more
core   +1 more source

Biharmonic space-like hypersurfaces in pseudo-Riemannian space

, 2008
We classify the space-like biharmonic surfaces in 3-dimension pseudo-Riemannian space form, and construct explicit examples of proper biharmonic hypersurfaces in general ADS space.
openaire   +2 more sources

Recurrent conformal 2-forms on pseudo-Riemannian manifolds

, 2014
In this paper, we introduce the notion of recurrent conformal 2-forms on a pseudo-Riemannian manifold of arbitrary signature. Some theorems already proved for the same differential structure on a Riemannian manifold are proven to hold in this more ...
Young Jin Suh, Suh, Young Jin, Mantica, Carlo Alberto, Carlo Alberto Mantica   +3 more
core   +1 more source

Conformal actions of nilpotent groups on pseudo-Riemannian manifolds

, 2010
International audienceWe study conformal actions of connected nilpotent Lie groups on compact pseudo-Riemannian manifolds. We prove that if a type-(p, q) compact manifold M supports a conformal action of a connected nilpotent group H, then the degree of ...
Frances, Charles, Charles Frances, Melnick, Karin, Karin Melnick   +3 more
core   +1 more source

A pseudo-Riemannian-gradient approach to the least-squares problem on the real symplectic group

, 2010
The present paper discusses the problem of geodesic least squares over the real symplectic group of matrices Sp(2n,R). As the space Sp(2n,R) is a non-compact Lie group, it is convenient to endow it with a pseudo-Riemannian geometry instead of a ...
Simone Fiori, FIORI, Simone
core   +1 more source