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arXiv 0810.0066math.DGmath.CT
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双向量丛上的李代数胚结构与李代数胚的表示论

Lie algebroid structures on double vector bundles and representation theory of Lie algebroids

Alfonso Gracia-Saz, Rajan Amit Mehta

摘要:

VB-代数胚本质上定义为向量丛范畴中的李代数胚对象。VB-代数胚与某些平坦李代数胚超联络之间存在一一对应,直到一个自然的等价概念。在这种情况下,我们能够构建特征类,在特殊情况下,再现由Crainic和Fernandes构建的特征类。给出了正则VB-代数胚的一个完整分类,并在此过程中得到了李代数胚的另一个示性类,这类李代数胚没有出现在李代数胚的常表示论中.

英文摘要:

A VB-algebroid is essentially defined as a Lie algebroid object in the category of vector bundles. There is a one-to-one correspondence between VB-algebroids and certain flat Lie algebroid superconnections, up to a natural notion of equivalence. In this setting, we are able to construct characteristic classes, which in special cases reproduce characteristic classes constructed by Crainic and Fernandes. We give a complete classification of regular VB-algebroids, and in the process we obtain another characteristic class of Lie algebroids that does not appear in the ordinary representation theory of Lie algebroids.

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