Weyl substructures and compatible linear connections

Details Weyl substructures and compatible linear connections Weyl substructures and compatible linear connections

2009-05-04

arxiv.org/abs/0905.0362v1

Mathematics

Differential Geometry

15 pages

Scientific paper

The aim of this paper is to study from the point of view of linear connections the data $(M,\mathcal{D},g,W),$ with $M$ a smooth $(n+p)$ dimensional real manifold, $(\mathcal{D},g)$ a \textit{$n$}\textit{\emph{dimensional semi-Riemannian distribution}}\emph{}on $M,$ $\mathcal{G}$ the conformal structure generated by $g$ and $W$ a Weyl substructure: a map $W:$ $\mathcal{G}\to$ $\Omega^{1}(M)$ such that $W(\overline{g})=W(g)-du,$ $\overline{g}=e^{u}g;u\in C^{\infty}(M)$. Compatible linear connections are introduced as a natural extension of similar notions from Riemannian geometry and such a connection is unique if a symmetry condition is imposed. In the foliated case the local expression of this unique connection is obtained. The notion of Vranceanu connection is introduced for a pair (Weyl structure, distribution) and it is computed for the tangent bundle of Finsler spaces, particularly Riemannian, choosing as distribution the vertical bundle of tangent bundle projection and as 1-form the Cartan form.

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