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arXiv 2102.13124math.GTmath.DS
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用于可测叶层的剪切-形状上闭链与地震流的遍历理论

Shear-shape cocycles for measured laminations and ergodic theory of the earthquake flow

Aaron Calderon, James Farre

AI总结:

本文将 Mirzakhani 的地震流与 horocycle 流共轭扩展为所有层上的双射,构造出地震流的新遍历测度,并将其自然扩展为上三角子群作用,借助推广的剪切坐标完成遍历测度分类。

摘要:

我们将 Mirzakhani 在地震流与 horocycle 流之间的共轭扩展为一个双射,证明了这些流在所有层(strata)上均存在共轭关系,并展示了地震流的大量新遍历测度。我们映射的结构表明,地震流可自然扩展为 SL(2,R) 的上三角子群 P < SL(2,R) 的作用,并将该作用的遍历测度分类为二次微分丛上仿射测度的拉回。我们的主要工具是将 Bonahon 和 Thurston 的剪切坐标推广到任意可测叶层。

英文摘要:

We extend Mirzakhani's conjugacy between the earthquake and horocycle flows to a bijection, demonstrating conjugacies between these flows on all strata and exhibiting an abundance of new ergodic measures for the earthquake flow. The structure of our map indicates a natural extension of the earthquake flow to an action of the the upper-triangular subgroup P < SL(2,R) and we classify the ergodic measures for this action as pullbacks of affine measures on the bundle of quadratic differentials. Our main tool is a generalization of the shear coordinates of Bonahon and Thurston to arbitrary measured laminations.

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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