Mathematics – Differential Geometry
Scientific paper
2003-10-20
Electron. Res. Announc. Amer. Math. Soc. 10 (2004), 1-10
Mathematics
Differential Geometry
10 pages, Latex
Scientific paper
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.
Kamber Franz W.
Michor Peter W.
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