Results 21 to 30 of about 24,392 (153)

Locally conformal symplectic nilmanifolds with no locally conformal K\"ahler metrics [PDF]

, 2014
We obtain an example of a compact locally conformal symplectic nilmanifold which admits no locally conformal K\"ahler metrics. This gives a new positive answer to a question raised by L. Ornea and M. Verbitsky.Comment: 7 pages, no figures.
Carlos Marrero, Giovanni Bazzoni, Juan
core   +1 more source

On hypercomplex pseudo-Hermitian manifolds

, 2008
The class of the hypercomplex pseudo-Hermitian manifolds is considered. The flatness of the considered manifolds with the 3 parallel complex structures is proved. Conformal transformations of the metrics are introduced.
Dimiev, Stancho, Gribachev, Kostadin, Manev, Mancho   +2 more
core   +1 more source

Hidden Symmetries of Euclideanised Kerr-NUT-(A)dS Metrics in Certain Scaling Limits [PDF]

, 2012
The hidden symmetries of higher dimensional Kerr-NUT-(A)dS metrics are investigated. In certain scaling limits these metrics are related to the Einstein-Sasaki ones.
Vilcu, Gabriel Eduard, Visinescu, Mihai
core   +3 more sources

AdS/CFT For Non-Boundary Manifolds [PDF]

, 2000
In its Euclidean formulation, the AdS/CFT correspondence begins as a study of Yang-Mills conformal field theories on the sphere, S^4. It has been successfully extended, however, to S^1 X S^3 and to the torus T^4. It is natural to hope that it can be made
McInnes, Brett
core   +2 more sources

On Ricci Solitons and Curvature Properties of Doubly Warped Products with QSMC

Axioms
This paper explores the geometric interplay between the Levi–Civita connection and the quarter-symmetric metric connection on doubly warped product manifolds.
Md Aquib, Vaishali Sah, Sarvesh Kumar Yadav, Jaya Upreti   +3 more
doaj   +1 more source

Conformal product structures on compact Kähler manifolds

Advances in Mathematics
A conformal product structure on a Riemannian manifold is a Weyl connection with reducible holonomy.
Moroianu, Andrei, Pilca, Mihaela
openaire   +3 more sources

The twistor spinors of generic 2- and 3-distributions

, 2010
Generic distributions on 5- and 6-manifolds give rise to conformal structures that were discovered by P. Nurowski resp. R. Bryant. We describe both as Fefferman-type constructions and show that for orientable distributions one obtains conformal spin ...
A. Čap, A. Čap, A. Čap, A. Čap, A. Čap, A. Čap, A. Čap, A. Čap, A. Čap, A.R. Gover, A.R. Gover, B. Kostant, D.M.J. Calderbank, H. Baum, H. Baum, Katja Sagerschnig, M. Hammerl, Matthias Hammerl, P. Lounesto, P. Nurowski, R.W. Sharpe, T.N. Bailey, É. Cartan   +22 more
core   +1 more source

On Generic submanifolds of a locally conformal Kahler manifold with parallel canonical structures [PDF]

International Journal of Mathematics and Mathematical Sciences, 1993
The study of CR‐submanifolds of a Kähler manifold was initiated by Bejancu [1]. Since then many papers have appeared on CR‐submanifolds of a Kähler manifold. Also, it has been studied that generic submanifolds of Kähler manifolds [2] are generalisations of holomorphic submanifolds, totally real submanifolds and CR‐submanifolds of Kähler manifolds.
M. Hasan shahid, A. Sharfuddin
openaire   +3 more sources

Nonstandard uniformized conformal structures on hyperbolic manifolds

Inventiones Mathematicae, 1991
Let \(M^ n\) denote a hyperbolic manifold of finite volume (or closed) and \({\mathcal C}(M^ n)\) the space of uniformized conformal structures on \(M^ n\). For \(n=2\) it is well known that this space is connected. The author discusses the problem whether \({\mathcal C}(M^ 3)\) is connected. He constructs a closed hyperbolic manifold \(M=H^ 3/\Gamma\),
openaire   +1 more source

TT-tensors and conformally flat structures on 3-manifolds [PDF]

Banach Center Publications, 1997
11 ...
openaire   +2 more sources