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arXiv math/9809041math.AG
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一类尖点曲线的基本群

Fundamental Group for some Cuspidal Curves

Jose Ignacio Cogolludo

摘要:

我们构造一族平面曲线作为P^2的阿贝尔覆盖的二次曲线的拉回。如果二次曲线与分歧线相切,则得到一类具有3n个A_{n-1}型奇点的2n次曲线。我们计算的基本群和亚历山大多项式的任何成员,这个家庭和它的一些变形。

英文摘要:

We construct a family of plane curves as pull-backs of a conic for abelian coverings of P^2. If the conic is tangent to the ramification lines one obtains a family of curves of degree 2n with 3n singularities of type A_{n-1}. We calculate the fundamental group and Alexander polynomial for any member of this family and for some deformations of it.

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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