Results 31 to 40 of about 95,729 (224)

New supersymmetric AdS_3 solutions [PDF]

, 2006
We construct infinite new classes of supersymmetric solutions of D=11 supergravity that are warped products of AdS_3 with an eight-dimensional manifold M_8 and have non-vanishing four-form flux. In order to be compact, M_8 is constructed as an S^2 bundle
Gauntlett, Jerome P., Mac Conamhna, Oisin A. P., Mateos, Toni, Waldram, Daniel   +3 more
core   +2 more sources

Einstein doubly warped product manifolds with semi-symmetric metric connection [PDF]

Acta Mathematica, 2020
In this paper, we study the doubly warped product manifolds with semi-symmetric metric connection. We derive the curvature formulas for doubly warped product manifold with semi-symmetric metric connection in terms of curvatures of components of doubly ...
Punam Gupta, A. Diallo
semanticscholar   +1 more source

Multidimensional integrable vacuum cosmology with two curvatures [PDF]

, 1996
The vacuum cosmological model on the manifold $R \times M_1 \times \ldots \times M_n$ describing the evolution of $n$ Einstein spaces of non-zero curvatures is considered. For $n = 2$ the Einstein equations are reduced to the Abel (ordinary differential)
Belinsky V A, Berezin V A, Bleyer U, Bleyer U, Demiansky M, Forgacs P, Gleiser M, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Ivashchuk V D, Koikawa T, Lorenz-Petzold D, Melnikov V N, Melnikov V N, Milne E A, Polyanin A D, Szydlowski M, Szydlowski M, Toda M, V D Ivashchuk, V N Melnikov, V R Gavrilov, Wesson P S, Zaitsev V F   +29 more
core   +3 more sources

Vanishing conditions on Weyl tensor for Einstein-type manifolds [PDF]

Pacific Journal of Mathematics, 2019
In this paper we consider an Einstein-type equation which generalizes important geometric equations, like static and critical point equations. We prove that a complete Einstein-type manifold with fourth-order divergence-free Weyl tensor and zero radial ...
B. Leandro
semanticscholar   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

, 2022
Hepatology, EarlyView.
Robert J. Fontana, Iris Liou, Adrian Reuben, Ayako Suzuki, M. Isabel Fiel, William Lee, Victor Navarro   +6 more
wiley   +1 more source

Near-flat space limit and Einstein manifolds [PDF]

, 2007
We study the near-flat space limit for strings on AdS(5)xM(5), where the internal manifold M(5) is equipped with a generic metric with U(1)xU(1)xU(1) isometry.
A. Butti, D.E. Berenstein, D.M. Hofman, Erik Tonni, G. Arutyunov, J.A. Minahan, J.P. Gauntlett, L.A. Pando Zayas, M. Blau, M. Blau, M. Blau, M. Cahen, N. Beisert, N. Beisert, N. Beisert, N. Beisert, N. Itzhaki, R. Hernandez, S. Benvenuti, S. Benvenuti, S. Benvenuti, S. Benvenuti, S. Franco ., S. Kuperstein, S.S. Gubser, Sergio Benvenuti, T. Klose, T. Klose   +27 more
core   +2 more sources

Gauge-invariant tensors of 4-manifold with conformal torsion-free connection and their applications for modeling of space-time

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
We calculated basic gauge-invariant tensors algebraically expressed through the matrix of conformal curvature. In particular, decomposition of the main tensor into gaugeinvariant irreducible summands consists of 4 terms, one of which is determined by ...
Leonid N Krivonosov, Vyacheslav A Luk'yanov   +1 more
doaj   +1 more source

Ricci flow on K\"ahler-Einstein manifolds

, 2003
In our previous paper math.DG/0010008, we develop some new techniques in attacking the convergence problems for the K\"ahler Ricci flow. The one of main ideas is to find a set of new functionals on curvature tensors such that the Ricci flow is the ...
Chen, X. X., Tian, G.
core   +1 more source

On Eta-Einstein Sasakian Geometry [PDF]

, 2005
We study eta-Einstein geometry as a class of distinguished Riemannian metrics on contact metric manifolds. In particular, we use a previous solution of the Calabi problem for Sasakian geometry to prove the existence of eta-Einstein structures on many ...
Boyer, Charles P., Galicki, Krzysztof, Matzeu, Paola   +2 more
core   +2 more sources

A family of multiply warped product semi-Riemannian Einstein metrics

The Journal of Geometric Mechanics, 2020
In this paper, we characterize multiply warped product semi -Riemannian manifolds when the base is conformal to an \begin{document}$ n $\end{document} -dimensional pseudo-Euclidean space.
B. Pal, Pankaj Kumar
semanticscholar   +1 more source