Natural connections on conformal Riemannian P-manifolds

Details Natural connections on conformal Riemannian P-manifolds Natural connections on conformal Riemannian P-manifolds

2011-09-13

arxiv.org/abs/1109.2704v2

Mathematics

Differential Geometry

9 pages

Scientific paper

The class W_1 of conformal Riemannian P-manifolds is the largest class of Riemannian almost product manifolds, which is closed with respect to the group of the conformal transformations of the Riemannian metric. This class is an analogue of the class of conformal Kaehler manifolds in almost Hermitian geometry. In the present work we study the natural connections on the manifolds (M, P, g) from the class W_1, i.e. the linear connections preserving the almost product structure P and the Riemannian metric g. We find necessary and sufficient conditions the curvature tensor of such a connection to have similar properties like the ones of the Kaehler tensor in Hermitian geometry. We determine the type of the manifolds admitting a natural connection with a parallel torsion.

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