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arXiv 0712.2290math.AG
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具有大基本群的不可约平面六次线

Irreducible plane sextics with large fundamental groups

Alex Degtyarev

摘要:

我们计算每个重8或9的不可约六次线的补的基本群(在某种意义上,不可约六次线的最大群),以及它们的169个导数(既有环面型的,也有非环面型的)。我们还给出了一个详细的几何描述的重量八,九和他们的模空间和计算他们的亚历山大模块,后者被证明是免费的一个适当的环。

英文摘要:

We compute the fundamental group of the complement of each irreducible sextic of weight eight or nine (in a sense, the largest groups for irreducible sextics), as well as of 169 of their derivatives (both of and not of torus type). We also give a detailed geometric description of sextics of weight eight and nine and of their moduli spaces and compute their Alexander modules; the latter are shown to be free over an appropriate ring.

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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