Results 1 to 10 of about 75,949 (319)

$m$-quasi-$*$-Einstein contact metric manifolds

open access: diamondKarpatsʹkì Matematičnì Publìkacìï, 2022
The goal of this article is to introduce and study the characterstics of $m$-quasi-$*$-Einstein metric on contact Riemannian manifolds. First, we prove that if a Sasakian manifold admits a gradient $m$-quasi-$*$-Einstein metric, then $M$ is $\eta ...
H.A. Kumara, V. Venkatesha, D.M. Naik
doaj   +3 more sources

A Kenmotsu metric as a conformal $\eta$-Einstein soliton [PDF]

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
The object of the present paper is to study some properties of Kenmotsu manifold whose metric is conformal $\eta$-Einstein soliton. We have studied certain properties of Kenmotsu manifold admitting conformal $\eta$-Einstein soliton.
S. Roy, S. Dey, A. Bhattacharyya
doaj   +2 more sources

Charged and Electromagnetic Fields from Relativistic Quantum Geometry [PDF]

open access: yesUniverse, 2016
In the recently introduced Relativistic Quantum Geometry (RQG) formalism, the possibility was explored that the variation of the tensor metric can be done in a Weylian integrable manifold using a geometric displacement, from a Riemannian to a Weylian ...
Marcos R. A. Arcodía, Mauricio Bellini
doaj   +5 more sources

Einstein manifolds with skew torsion [PDF]

open access: greenThe Quarterly Journal of Mathematics, 2012
24 pages, 1 figure, new version with erratum added at the ...
Ilka Agricola, Ana Cristina Ferreira
openalex   +5 more sources

The $\eta$-Einstein condition on indefinite s-manifolds [PDF]

open access: greenMathematica Slovaca, 2012
Abstract An η-Einstein condition is introduced in the context of indefinite globally framed f-manifolds, and several Schur-type results for indefinite S-manifolds are proved.
Letizia Brunetti
openalex   +3 more sources

Characterizations of Generalized Quasi-Einstein Manifolds [PDF]

open access: diamondAnalele 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   +2 more sources

Einstein Manifolds As Yang-Mills Instantons [PDF]

open access: yesModern Physics Letters A, 2013
It is well-known that Einstein gravity can be formulated as a gauge theory of Lorentz group where spin connections play a role of gauge fields and Riemann curvature tensors correspond to their field strengths.
Donaldson S. K.   +6 more
core   +2 more sources

ON QUASI EINSTEIN MANIFOLDS

open access: bronzeCommunications of the Korean Mathematical Society, 2008
The object of the present paper is to study some properties of a quasi Einstein manifold. A non-trivial concrete example of a quasi Einstein manifold is also given.
Uday Chand De, Biman Kanti De
openalex   +3 more sources

Anatomy of Einstein manifolds [PDF]

open access: yesPhysical Review D, 2022
v2: Title changed with improved contents, 36 pages, 4 figures, to appear in Phys.
Jongmin Park   +2 more
openaire   +2 more sources

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