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arXiv 1902.04533math.GT
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关于Thurston测度在可测层空间上的归一化

On normalizations of Thurston measure on the space of measured laminations

Leonid Monin, Vanya Telpukhovskiy

摘要:

与具有$n$穿刺的亏格为$g$的拓扑曲面$Σ$相关联的测量层空间$\mathcal{ML}(Σ)$是实维数为$6g-6+2n$的积分分片线性流形。Thurston定义的$\mathcal{ML}(Σ)$上也有一个自然的辛结构。积分和辛结构定义了$\mathcal{ML}(Σ)$上的一对测度,已知它们是成比例的。这些测度在$\mathcal{ML}(Σ)$上的投影类称为Thurston测度。本文计算了Thurston测度的两个正规化之间的比值。

英文摘要:

The space of measured laminations $\mathcal{ML}(Σ)$ associated to a topological surface $Σ$ of genus $g$ with $n$ punctures is an integral piecewise linear manifold of real dimension $6g-6+2n$. There is also a natural symplectic structure on $\mathcal{ML}(Σ)$ defined by Thurston. The integral and symplectic structures define a pair of measures on $\mathcal{ML}(Σ)$ which are known to be proportional. The projective class of these measures on $\mathcal{ML}(Σ)$ is called the Thurston measure. In this note we compute the ratio between two normailzations of the Thurston measure.

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