Geometry of hypersurfaces of a quarter symmetric non metric connection in a quasi-Sasakian manifold
Karpatsʹkì Matematičnì Publìkacìï, 2015 The purpose of the paper is to study the notion of CR-submanifold and the existence of some structures on a hypersurface of a quarter symmetric non metric connection in a quasi-Sasakian manifold.
Sh. Rahman
doaj +1 more source
Sigma models with non-commuting complex structures and extended supersymmetry [PDF]
, 1999 We discuss additional supersymmetries for N = (2, 2) supersymmetric non-linear sigma models described by left and right semichiral superfields.Comment: 11 pages. Talk presented by U.L.
Abou Zeid +31 more
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The Calabi complex and Killing sheaf cohomology [PDF]
, 2014 It has recently been noticed that the degeneracies of the Poisson bracket of linearized gravity on constant curvature Lorentzian manifold can be described in terms of the cohomologies of a certain complex of differential operators. This complex was first
Khavkine, Igor
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`Hidden' Symmetries of Higher Dimensional Rotating Black Holes [PDF]
, 2006 We demonstrate that the rotating black holes in an arbitrary number of dimensions and without any restrictions on their rotation parameters possess the same `hidden' symmetry as the 4-dimensional Kerr metric.
C. D. Collinson +5 more
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On the Geometry of Connections with Totally Skew-Symmetric Torsion on Manifolds with Additional Tensor Structures and Indefinite Metrics [PDF]
, 2010 This paper is a survey of results obtained by the authors on the geometry of connections with totally skew-symmetric torsion on the following manifolds: almost complex manifolds with Norden metric, almost contact manifolds with B-metric and almost ...
Gribachev, Kostadin +2 more
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Third Order ODEs Systems and Its Characteristic Connections [PDF]
, 2011 We compute the characteristic Cartan connection associated with a system of third order ODEs. Our connection is different from Tanaka normal one, but still is uniquely associated with the system of third order ODEs. This allows us to find all fundamental
Medvedev, Alexandr
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Schrödinger connections: from mathematical foundations towards Yano–Schrödinger cosmology
Classical and Quantum GravityAbstract Schrödinger connections are a special class of affine connections, which despite being metric incompatible, preserve length of vectors under autoparallel transport. In the present paper, we introduce a novel coordinate-free formulation of Schrödinger connections.
Lehel Csillag +2 more
openaire +2 more sources
Sigma models with off-shell N=(4,4) supersymmetry and noncommuting complex structures
, 2010 We describe the conditions for extra supersymmetry in N=(2,2) supersymmetric nonlinear sigma models written in terms of semichiral superfields. We find that some of these models have additional off-shell supersymmetry.
A Bredthauer +29 more
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A new modelling framework for statistical cumulus dynamics [PDF]
, 2011 We propose a new modelling framework suitable for the description of atmospheric convective systems as a collection of distinct plumes. The literature contains many examples of models for collections of plumes in which strong simplifying assumptions are ...
Landau L. D., van Kampen N. G.
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