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arXiv 1906.07147math.GT
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双曲三维流形的尖点传递性

Cusp transitivity in hyperbolic 3-manifolds

Roger Vogeler

摘要:

设$M$是具有等距群$G$的尖点有限体积双曲三元流形.然后$G$通过对某个整数$k\ge 0$在$M$的尖点上的置换诱导出一个$k$传递作用.一般来说,$G$是平凡的,而$k=0$是平凡的,但$k>0$在特殊情况下确实会发生。我们展示了使用$k=1,2,4$的示例。一个有趣的问题涉及固定的$k$可能的尖点数量。我们的主要结果通过构造一族尖点个数没有上界的流形给出了$k=2$的一个答案。

英文摘要:

Let $M$ be a cusped finite-volume hyperbolic three-manifold with isometry group $G$. Then $G$ induces a $k$-transitive action by permutation on the cusps of $M$ for some integer $k\ge 0$. Generically $G$ is trivial and $k=0$, but $k>0$ does occur in special cases. We show examples with $k=1,2,4$. An interesting question concerns the possible number of cusps for a fixed $k$. Our main result provides an answer for $k=2$ by constructing a family of manifolds having no upper bound on the number of cusps.

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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