Entropy on Riemann surfaces and the Jacobians of finite covers

Entropy on Riemann surfaces and the Jacobians of finite covers
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黎曼曲面上的熵和有限覆盖的雅可比行列式

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发表时间:
2013
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通讯作者:
C. McMullen
C. McMullen
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作者:
C. McMullen

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本文描述了那些伪阿诺索夫映射,其熵可以通过对有限覆盖进行限制来同调地检测。证明是通过复杂的分析方法进行的。相同的方法显示自然映射 Mg → Ah,它将黎曼曲面发送到其所有有限覆盖的雅可比行列式,是在大多数方向上的收缩。
This paper characterizes those pseudo-Anosov mappings whose entropy can be detected homologically by taking a limit over finite covers. The proof is via complex-analytic methods. The same methods show the natural map Mg → Ah, which sends a Riemann surface to the Jacobians of all of its finite covers, is a contraction in most directions.