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arXiv 0711.2677math.AG
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均匀化热带曲线I:亏格0和亏格1

Uniformizing Tropical Curves I: Genus Zero and One

David E Speyer

摘要:

在热带几何中,给定一个复曲面簇中的曲线,我们定义一个嵌入在欧几里得空间中的对应图。我们研究的问题,扭转这个过程的曲线亏格0和1。我们的方法侧重于描述曲线的参数化,而不是由他们的定义方程,我们给参数化的有理函数在属零的情况下,非阿基米德椭圆函数在属一的情况下。对于亏格为零的曲线,那些可以提升的图可以用完全组合的方式来刻画。对于亏格为1的曲线,证明了Mikhalkin给出的某些条件是充分的,并给出了一个新的必要条件。

英文摘要:

In tropical geometry, given a curve in a toric variety, one defines a corresponding graph embedded in Euclidean space. We study the problem of reversing this process for curves of genus zero and one. Our methods focus on describing curves by parameterizations, not by their defining equations; we give parameterizations by rational functions in the genus zero case and by non-archimedean elliptic functions in the genus one case. For genus zero curves, those graphs which can be lifted can be characterized in a completely combinatorial manner. For genus one curves, show that certain conditions identified by Mikhalkin are sufficient and we also identify a new necessary condition.

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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