Results 181 to 190 of about 20,711 (219)

On submanifolds in pseudo-Riemannian space forms

open access: yesOn submanifolds in pseudo-Riemannian space forms
openaire  

Structure of the Projective Group in A Pseudo-Riemannian Space

Theoretical and Mathematical Physics(Russian Federation), 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

Pseudo-Riemannian geodesics and billiards

open access: yesAdvances in Mathematics, 2009
In pseudo-Riemannian geometry the spaces of space-like and time-like geodesics on a pseudo-Riemannian manifold have natural symplectic structures (just like in the Riemannian case), while the space of light-like geodesics has a natural contact structure.
Boris Khesin, Serge Tabachnikov
exaly   +2 more sources

Quasi–minimal surfaces of pseudo–Riemannian space forms with positive relative nullity

open access: yesJournal of Mathematical Analysis and Applications, 2020
In this paper, we consider surfaces in 4–dimensional pseudo–Riemannian space–forms with index 2. First, we obtain some of geometrical properties of such surfaces considering their relative null space.
Burcu Bektaş Demirci   +1 more
exaly   +2 more sources

POLES OF PSEUDO-RIEMANNIAN SPACES

Mathematics of the USSR-Izvestiya, 1975
Two-dimensional complete analytic pseudo-Riemannian spaces with poles are studied. A pole is a point with respect to which admits a one-parameter group of rotations. With each pole is connected a holomorphic function (the complex pole function). Necessary conditions on are established.
Solodovnikov, A. S., Kamysanskii, N. R.
openaire   +2 more sources

Anti-invariant Pseudo-Riemannian Submersions and Clairaut Submersions from Paracosymplectic Manifolds

open access: yesMediterranean Journal of Mathematics, 2019
In this paper, we investigate geometric properties of anti-invariant pseudo-Riemannian submersions whose total space is a paracosymplectic manifold. Then, we study new conditions for anti-invariant pseudo-Riemannian submersions to be Clairaut submersions.
Yilmaz Gündüzalp
exaly   +2 more sources

Nonflat pseudo-Riemannian space forms and homogeneous pseudo-Riemannian structures of class $S_1$

Publicationes Mathematicae Debrecen, 1995
Starting from the characterization of connected, simply connected and complete homogeneous pseudo-Riemannian manifold in terms of a (1,2) tensor field \(S\) on a manifold [\textit{P. M. Gadea} and \textit{J. A. Oubiña}, Houston J. Math. 18, No. 3, 449-465 (1992; Zbl 0760.53029)], the authors obtain a classification of homogeneous pseudo-Riemannian ...
Gadea, P. M., Muñoz Masqué, J.
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Canonical deformations of pseudo-Riemannian spaces

AIP Conference Proceedings, 2019
The paper presents the variety of Saint-Venant conditions for pseudo-Riemannian spaces. The conditions are applied to research on special canonical deformations. Authors built examples that highlight the possible application of obtained results.
N. Vashpanova   +2 more
openaire   +1 more source

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