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arXiv 1004.4094math.GT
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$G$ -流形到其轨道空间映射的三角剖分

Triangulation of the map of a $G$-manifold to its orbit space

Mitsutaka Murayama, Masahiro Shiota

摘要:

设$G$是李群,$M$是光滑真$G$ -流形.令$pi:Mto M/G$表示到轨道空间的自然映射。则存在PL流形$P$,多面体$L$和同胚$tau:Pto M$,$σ:M/Gto L$使得$σ\circpi\circτ$是PL.如果$M$和$G$ -作用是解析类的,我们可以选择子解析$τ$,然后是唯一的$P$和$L$。

英文摘要:

Let $G$ be a Lie group and $M$ a smooth proper $G$-manifold. Let $pi:Mto M/G$ denote the natural map to the orbit space. Then there exist a PL manifold $P$, a polyhedron $L$ and homeomorphisms $tau:Pto M$ and $σ:M/Gto L$ such that $σ\circpi\circτ$ is PL. If $M$ and the $G$-action are of analytic class, we can choose subanalytic $τ$ and then unique $P$ and $L$.

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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