Results 21 to 30 of about 75,961 (279)

Examples of Einstein manifolds in odd dimensions [PDF]

open access: yes, 2011
We construct Einstein metrics of non-positive scalar curvature on certain solid torus bundles over a Fano Kahler-Einstein manifold. We show, among other things, that the negative Einstein metrics are conformally compact, and the Ricci-flat metrics have ...
Chen, Dezhong
core   +1 more source

Sasaki-Einstein manifolds [PDF]

open access: yesSurveys 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.
openaire   +2 more sources

Einstein manifolds and contact geometry [PDF]

open access: yesProceedings 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
openaire   +2 more sources

Geometry of conformal η-Ricci solitons and conformal η-Ricci almost solitons on paracontact geometry

open access: yesOpen Mathematics, 2022
We prove that if an η\eta -Einstein para-Kenmotsu manifold admits a conformal η\eta -Ricci soliton then it is Einstein. Next, we proved that a para-Kenmotsu metric as a conformal η\eta -Ricci soliton is Einstein if its potential vector field VV is ...
Li Yanlin   +3 more
doaj   +1 more source

Complete Riemannian manifolds admitting a pair of Einstein-Weyl structures [PDF]

open access: yesMathematica Bohemica, 2016
We prove that a connected Riemannian manifold admitting a pair of non-trivial Einstein-Weyl structures $(g, \pmømega)$ with constant scalar curvature is either Einstein, or the dual field of $ømega$ is Killing.
Amalendu Ghosh
doaj   +1 more source

∗-η-Ricci Soliton and Gradient Almost ∗-η-Ricci Soliton Within the Framework of Para-Kenmotsu Manifolds

open access: yesFrontiers in Physics, 2022
The goal of the present study is to study the ∗-η-Ricci soliton and gradient almost ∗-η-Ricci soliton within the framework of para-Kenmotsu manifolds as a characterization of Einstein metrics.
Santu Dey, Nasser Bin Turki
doaj   +1 more source

Characterizations of Generalized Quasi-Einstein Manifolds

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
We give characterizations of generalized quasi-Einstein manifolds for both even and odd ...
Sular Sibel, Özgür Cihan
doaj   +1 more source

On the scalar curvature of Einstein manifolds [PDF]

open access: yesMathematical Research Letters, 1997
LaTeX.
Catanese, Fabrizio, LeBrun, Claude
openaire   +3 more sources

Induced matter: Curved N-manifolds encapsulated in Riemann-flat N+1 dimensional space [PDF]

open access: yes, 2005
Liko and Wesson have recently introduced a new 5-dimensional induced matter solution of the Einstein equations, a negative curvature Robertson-Walker space embedded in a Riemann flat 5-dimensional manifold. We show that this solution is a special case of
Campbell J.   +2 more
core   +3 more sources

Some Homogeneous Einstein Manifolds [PDF]

open access: yesNagoya Mathematical Journal, 1970
Let G be a connected Lie group and H a closed subgroup with Lie algebra such that in the Lie algebra g of G there exists a subspace m with (subspace direct sum) and In this case the corresponding manifold M = G/H is called a reductive homogeneous space and (g,) (or (G,H)) a reductive pair.
openaire   +2 more sources

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