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arXiv 1304.7838math.DG
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局部齐性流形的无穷小化与重构

The Infinitesimalization and Reconstruction of Locally Homogeneous Manifolds

Anthony D. Blaom

摘要:

李代数体上的线性联络称为嘉当联络,如果它与李代数体结构适当相容。这里我们证明了光滑连通流形$M$是局部齐次的,即,承认一个地图集的图表模型上一些齐性空间$G/H$ -当且仅当存在一个传递李代数体在$M$承认一个平坦的嘉当联络是“几何封闭的”。它示出如何扭转和monodromy的连接确定特定形式的$G/H$。在一个额外的完备性假设下,局部同质性变成全局同质性,直到覆盖。

英文摘要:

A linear connection on a Lie algebroid is called a Cartan connection if it is suitably compatible with the Lie algebroid structure. Here we show that a smooth connected manifold $M$ is locally homogeneous - i.e., admits an atlas of charts modeled on some homogeneous space $G/H$ - if and only if there exists a transitive Lie algebroid over $M$ admitting a flat Cartan connection that is 'geometrically closed'. It is shown how the torsion and monodromy of the connection determine the particular form of $G/H$. Under an additional completeness hypothesis, local homogeneity becomes global homogeneity, up to cover.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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