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arXiv math/0310308math.DG
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将李代数作用完备化为李群作用

Completing Lie algebra actions to Lie group actions

Franz W. Kamber, Peter W. Michor

摘要:

对于流形$M$上的向量场的有限维李代数$M$,我们证明了$M$可以无条件地完备到$G$ -空间,但它既不是Hausdorff空间,也不是一般的$T_1$空间.这里$G$是一个具有李代数$\g$的连通李群。对于传递的$\g$ -作用,对于不需要闭合的李群$H$,完备化的形式为$G/H$。通常,可以通过完成每个$\g$ -轨道来构造完成。

英文摘要:

For a finite dimensional Lie algebra $\g$ of vector fields on a manifold $M$ we show that $M$ can be completed to a $G$-space in a unversal way, which however is neither Hausdorff nor $T_1$ in general. Here $G$ is a connected Lie group with Lie-algebra $\g$. For a transitive $\g$-action the completion is of the form $G/H$ for a Lie subgroup $H$ which need not be closed. In general the completion can be constructed by completing each $\g$-orbit.

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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