arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.2941math.GTmath.DS
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伪Anosov映射的熵与体积

Entropy vs volume for pseudo-Anosov maps

Eiko Kin, Sadayoshi Kojima, Mitsuhiko Takasawa

摘要:

我们将讨论有关的理论和实验结果比较熵的伪Anosov映射和体积的映射环面。最近对Teichmüller空间的Weil-Petersson几何的研究告诉我们,在某种有界几何条件下,Weil-Petersson几何的两边都存在线性不等式.我们构造了一族在无界几何条件下违反不等式的伪Anosov映射,给出了穿孔环面的一个显式边界常数,并给出了一些基于实验的观察结果.

英文摘要:

We will discuss theoretical and experimental results concerning comparison of entropy of pseudo-Anosov maps and volume of their mapping tori. Recent study of Weil-Petersson geometry of the Teichmüller space tells us that they admit linear inequalities for both sides under some bounded geometry condition. We construct a family of pseudo-Anosov maps which violates one side of inequalities under unbounded geometry setting, present an explicit bounding constant for a punctured torus, and provide several observations based on experiments.

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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