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arXiv 2011.12279math.GTmath.QA
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$3$ -流形上的角结构

Angle structures on $3$-manifolds

Anton Mellit

摘要:

给定一个紧的定向三角化$3$ -流形,我们发现一个非平凡的条件,满足一定的标签四面体的任意阿贝尔群的元素,我们称之为角结构。流形的光滑性是必不可少的。这是受到双曲流形的体积概念的启发,这将对应于交换群是$\mathbb{C}$的乘法群的情况,但这里的构造似乎更一般,特别是它只使用了阿贝尔群结构。

英文摘要:

Given a compact oriented triangulated $3$-manifold we find a non-trivial condition satisfied by certain labelings of the tetrahedra by elements of an arbitrary abelian group which we call angle structures. Smoothness of the manifold is used in an essential way. This is inspired by the notion of the volume of hyperbolic manifolds, which would correspond to the case when the abelian group is the multiplicative group of $\mathbb{C}$, but the construction here seems to be more general, in particular it only uses the abelian group structure.

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