K3曲面上Severi簇的不可约性
代数几何
2023-08-01 v3
摘要
设为亏格的一般原极化曲面。对每个,我们考虑参数化中恰以个结点为奇点的整曲线的Severi簇。我们证明其在中的闭包只要便是连通的。若,我们得到更强的结果:如一个著名猜想所预言,该Severi簇是不可约的。这些结果通过退化到Halphen曲面得到。
引用
@article{arxiv.2112.09398,
title = {Irreducibility of Severi varieties on K3 surfaces},
author = {Andrea Bruno and Margherita Lelli-Chiesa},
journal= {arXiv preprint arXiv:2112.09398},
year = {2023}
}
备注
Major revision due to a mistake in Proposition 3.2 of the previous version communicated to us by Xi Chen and Adrian Zahariuc