长度谱与平坦度量的退化
Length spectra and degeneration of flat metrics
摘要:
本文研究了有限型曲面上的平坦度量(半平移结构)。有两个主要结果。第一个是一个完整的描述时,一组简单闭曲线是谱刚性的,也就是说,当长度向量确定的度量类中的平坦的度量。其次,我们给出了一个嵌入到测地流空间,并利用它得到了一个边界的空间平坦的度量。几何解释是平坦度量退化为表面上的“混合结构”:部分平坦度量和部分测量叶理。
英文摘要:
In this paper we consider flat metrics (semi-translation structures) on surfaces of finite type. There are two main results. The first is a complete description of when a set of simple closed curves is spectrally rigid, that is, when the length vector determines a metric among the class of flat metrics. Secondly, we give an embedding into the space of geodesic currents and use this to get a boundary for the space of flat metrics. The geometric interpretation is that flat metrics degenerate to "mixed structures" on the surface: part flat metric and part measured foliation.
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