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arXiv 2004.08719math.AG
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低亏格K3曲面上有理曲线的单值性

Monodromy of rational curves on K3 surfaces of low genus

Sailun Zhan

摘要:

在许多情况下,枚举问题的单值群将是完全对称群。本文研究了$\mathbb{C}$上固定亏格的一般K3曲面上的$|\mathcal{O}(1)|$中的有理曲线随K3曲面变化的类似现象.证明了当K3曲面有亏格$g$,$1\leq g\leq 3$时,单值群是完全对称群.

英文摘要:

In many situations, the monodromy group of enumerative problems will be the full symmetric group. In this paper, we study a similar phenomenon on the rational curves in $|\mathcal{O}(1)|$ on a generic K3 surface of fixed genus over $\mathbb{C}$ as the K3 surface varies. We prove that when the K3 surface has genus $g$, $1\leq g\leq 3$, the monodromy group is the full symmetric group.

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