Results 21 to 30 of about 241,236 (258)

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

Mathematica 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

REMARKS ON KÄHLER-EINSTEIN MANIFOLDS [PDF]

Nagoya Mathematical Journal, 1972
The main purpose of this note is to characterize a compact Káhler-Einstein manifold in terms of curvature form. The curvature form Q is an EndT valued differential form of type (1,1) which represents the curvature class of the manifold. We shall prove that the curvature form of a Káhler metric is the harmonic representative of the curvature class if ...
openaire   +4 more sources

Isolamento, cultivo e caracterização de células-tronco CD133+ de glioblastoma humano [PDF]

, 2012
OBJECTIVE: To establish the method of isolation and culture of human glioblastoma neurospheres, and the purification of their stem cells, followed by the process of obtaining tumor subspheres, immunophenotypically characterizing this clonogenic set ...
Brandt, Reynaldo Andre, Gamarra, Lionel Fernel, Miyaki, Liza Aya Mabuchi, Pavon, Lorena Favaro, Marti, Luciana Cavalheiro, Feres Junior, Hallin, Mamani, Javier Bustamante, Pagura, Jorge Roberto, Sibov, Tatiana Tais, Ribas, Guilherme Carvalhal, Malheiros, Suzana Maria Fleury [UNIFESP], Joaquim, Marcos Augusto Stavale   +11 more
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On the scalar curvature of Einstein manifolds [PDF]

Mathematical Research Letters, 1997
LaTeX.
Catanese, Fabrizio, LeBrun, Claude
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Characterizations of Generalized Quasi-Einstein Manifolds

Analele 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

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

Frontiers 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

Why Einstein did not believe that General Relativity geometrizes gravity [PDF]

, 2013
I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational or (subsequently) the electromagnetic field; indeed, he thought that the very statement that General Relativity geometrizes gravity "is not saying anything
Lehmkuhl, D, Lehmkuhl, Dennis
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Soliton on Sasakian manifold endowed with quarter-symmetric non-metric connection on the tangent bundle [PDF]

Arab Journal of Mathematical Sciences
PurposeThe purpose of this paper is to study the properties of the solitons on Sasakian manifold on the tangent bundle with respect to quarter symmetric non metric connection.Design/methodology/approachWe used the vertical and complete lifts, Ricci ...
Lalnunenga Colney, Rajesh Kumar
doaj   +1 more source

On generalized Quasi Einstein manifolds

Filomat, 2014
Quasi Einstein manifold is a simple and natural generalization of an Einstein manifold. The object of the present paper is to study some geometric properties of generalized quasi Einstein manifolds. Two non-trivial examples have been constructed to prove the existence of a generalized quasi Einstein manifold.
De A., Yildiz A., De U.C.
openaire   +3 more sources

Minimal Immersions of Kahler manifolds into Euclidean Spaces [PDF]

, 2003
It is proved here that a minimal isometric immersion of a Kähler-Einstein or homogeneous Kähler-manifold into an Euclidean space must be totally ...
Di Scala, Antonio Jose'
core   +1 more source