Extensions of Lie brackets

Extensions of Lie brackets
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DOI:
10.1016/j.geomphys.2009.10.006
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发表时间:
2008-10
影响因子:
1.5
通讯作者:
O. Brahic
O. Brahic
中科院分区:
数学3区
文献类型:
--
作者:
O. Brahic

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我们提供了一个框架的扩展李代数胚,包括非交换扩展和李代数胚在不同的基础。我们的方法涉及Ehresmann连接,它允许直接概括的经典结构。我们展示了过滤上同调和解释相关的频谱序列。我们还给出了一个描述的广群集成的扩展的情况下,一个完整的连接存在。还研究了可积性。
We provide a framework for extensions of Lie algebroids, including non-abelian extensions and Lie algebroids over different bases. Our approach involves Ehresmann connections, which allows straight generalizations of classical constructions. We exhibit a filtration in cohomology and explain the associated spectral sequence. We also give a description of the groupoid integrating an extension in case a complete connection exists. The integrability is also studied.