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arXiv 1203.2663math.AGmath.ATmath.GT
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基于轨道束的拟射影簇的上同调支撑轨迹深度

Depth of cohomology support loci for quasi-projective varieties via orbifold pencils

E. Artal Bartolo, J. I. Cogolludo-Agustin, A. Libgober

摘要:

本文给出了光滑拟射影簇的基本群与其第二交换子的商与到轨道曲线的映射的存在性之间的关系。它扩展了以前研究的情况下,当目标是一个平滑曲线。在这种情况下,当拟射影簇是一个补充的平面代数曲线,这提供了新的关系之间的基本群,方程的曲线,并存在多项式的解决方案,以某些方程推广佩尔方程。这些关系式是根据深度来制定的,深度是这里详细讨论的基本群的特征的不变量。

英文摘要:

The present paper describes a relation between the quotient of the fundamental group of a smooth quasi-projective variety by its second commutator and the existence of maps to orbifold curves. It extends previously studied cases when the target was a smooth curve. In the case when the quasi-projective variety is a complement to a plane algebraic curve this provides new relations between the fundamental group, the equation of the curve, and the existence of polynomial solutions to certain equations generalizing Pell's equation. These relations are formulated in terms of the depth which is an invariant of the characters of the fundamental group discussed in detail here.

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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