Results 11 to 20 of about 241,236 (258)
Some submersions of CR-hypersurfaces of Kaehler-Einstein manifold [PDF]
International Journal of Mathematics and Mathematical Sciences, 2003 The Riemannian submersions of a CR-hypersurface M of a Kaehler-Einstein manifold M˜ are studied. If M is an extrinsic CR-hypersurface of M˜, then it is shown that the base space of the submersion is also a Kaehler-Einstein manifold.
Vittorio Mangione
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On pseudo quasi-Einstein manifolds [PDF]
Periodica Mathematica Hungarica, 2009 A type of non-flat semi-Riemannian manifolds, called pseudo quasi-Einstein manifold, is introduced and studied in detail. The quasi-Einstein manifolds are well-known, and are relevant in general relativity: Robertson-Walker spacetimes belong to this class.
Uday Chand De +5 more
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Anatomy of Einstein manifolds [PDF]
Physical Review D, 2022 v2: Title changed with improved contents, 36 pages, 4 figures, to appear in Phys.
Jongmin Park +2 more
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On a semi-quasi-Einstein manifold [PDF]
Journal of Geometry and Physics, 2020 In the present paper we introduce a semi-quasi-Einstein manifold from a semi symmetric metric connection. Among others, the popular Schwarzschild and Kottler spacetimes are shown to possess this structure. Certain curvature conditions are studied in such a manifold with a Killing generator.
Yanling Han, Avik De, Peibiao Zhao
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Josephson effect in multicomponent Bose-Einstein condensates [PDF]
, 2013 [cat]En aquesta Tesi s'estudia i es caracteritza el comportament dels condensats de Bose-Einstein en una junció bosònica de Josephson (BJJ), tot utilitzant dos formalismes teòrics diferents: l'aproximació de camp mig (amb l'equació de Gross-Pitaevskii) i
Melé Messeguer, Marina
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ON RICCI SEMI-SYMMETRIC SUPER QUASI-EINSTEIN HERMITIAN MANIFOLD [PDF]
, 2023 The object of the present paper is to study the Bochner Ricci semi-symmetric super quasi-Einstein Hermitian manifold and a holomorphically projective Ricci-semi symmetric super quasi Einstein Hermitian ...
Gupta, Brijesh Kumar +1 more
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Einstein manifolds and contact geometry [PDF]
Proceedings of the American Mathematical Society, 2001 We show that every K-contact Einstein manifold is Sasakian-Einstein and discuss several corollaries of this result.
Boyer, Charles P., Galicki, Krzysztof
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Sasaki-Einstein manifolds [PDF]
Surveys in Differential Geometry, 2011 This article is an overview of some of the remarkable progress that has been made in Sasaki-Einstein geometry over the last decade, which includes a number of new methods of constructing Sasaki-Einstein manifolds and obstructions.
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On Einstein Equations on Manifolds and Supermanifolds [PDF]
Journal of Nonlinear Mathematical Physics, 2002 The Einstein equations (EE) are certain conditions on the Riemann tensor on the real Minkowski space M. In the twistor picture, after complexification and compactification M becomes the Grassmannian $Gr_{2}^{4}$ of 2-dimensional subspaces in the 4-dimensional complex one.
Leites, D., Poletaeva, E., Serganova, V.
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Characterization on Mixed Generalized Quasi-Einstein Manifold [PDF]
, 2016 summary:In the present paper we study characterizations of odd and even dimensional mixed generalized quasi-Einstein manifold. Next we prove that a mixed generalized quasi-Einstein manifold is a generalized quasi-Einstein manifold under a certain ...
BHATTACHARYYA, Arindam +2 more
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