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arXiv 2308.06643math.GTmath.DG
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基本阴影链环补集的几何及其对1-回路猜想的应用

Geometry of fundamental shadow link complements and applications to the 1-loop conjecture

Tushar Pandey, Ka Ho Wong

AI总结:

本文为基本阴影链环补集构造几何理想三角剖分并显式求解拼接方程,导出超理想四面体及Dehn填充双曲3-流形的体积公式,进而验证1-回路猜想并证明其拓扑不变性与手术公式。

摘要:

我们为每个基本阴影链环补集构造了几何理想三角剖分,并针对该链环补集的 $\mathrm{PSL}(2;\mathbb{C})$-特征标簇的特定分支中的任意一般特征标,用链环子午线的对数完整群显式求解了拼接方程。作为直接应用,我们得到了用超理想四面体的二面角表示其体积的新公式,以及通过对基本阴影链环补集的某些边界分量进行Dehn填充所得双曲3-流形的体积公式。此外,利用这些理想三角剖分,我们对每个基本阴影链环补集验证了Dimofte和Garoufalidis提出的1-回路猜想。借助Kalelkar-Schleimer-Segerman的结果,我们还证明了1-回路不变量的拓扑不变性,并表明1-回路不变量满足一个手术公式。由此,我们证明了对任意基本阴影链环补集的边界分量进行足够长的Dehn填充所得流形的1-回路猜想。这为一大类双曲3-流形验证了1-回路猜想。

英文摘要:

We construct a geometric ideal triangulation for every fundamental shadow link complement and solve the gluing equation explicitly in terms of the logarithmic holonomies of the meridians of the link for any generic character in the distinguished component of the $\mathrm{PSL}(2;\mathbb{C})$-character variety of the link complement. As immediate applications, we obtain a new formula for the volume of a hyperideal tetrahedron in terms of its dihedral angles, and a formula for the volume of hyperbolic 3-manifolds obtained by doing Dehn-fillings to some of the boundary components of fundamental shadow link complements. Moreover, by using these ideal triangulations, we verify the 1-loop conjecture proposed by Dimofte and Garoufalidis for every fundamental shadow link complement. By using the result of Kalelkar-Schleimer-Segerman \cite{KSS}, we also prove the topological invariance of the 1-loop invariant and show that the 1-loop invariant satisfies a surgery formula. As a result, we prove the 1-loop conjecture for manifolds obtained by doing sufficiently long Dehn-fillings on boundary components of any fundamental shadow link complement. This verifies the 1-loop conjecture for a large class of hyperbolic 3-manifolds.

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