arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1901.04032math.AG
收藏

K3曲面的Hilbert平方和Debarre-Voisin簇

Hilbert squares of K3 surfaces and Debarre-Voisin varieties

Olivier Debarre, Frédéric Han, Kieran O'Grady, Claire Voisin

摘要:

Debarre-Voisin hyperkähler fourfolds是从$10$维复向量空间上的交替$3$ -形式构建的,我们称之为三向量。它们类似于与三次四重相关的Beauville-Donagi四重。在这篇文章中,我们研究了几个三向量,其相关的Debarre-Voisin簇是退化的,在这个意义上,它要么是可约的或有多余的维数。我们发现,Debarre-Voisin品种专门化,沿一般$1$参数退化到这些三向量,品种同构或双理性同构的希尔伯特平方的K3表面。

英文摘要:

The Debarre-Voisin hyperkähler fourfolds are built from alternating $3$-forms on a $10$-dimensional complex vector space, which we call trivectors. They are analogous to the Beauville-Donagi fourfolds associated with cubic fourfolds. In this article, we study several trivectors whose associated Debarre-Voisin variety is degenerate, in the sense that it is either reducible or has excessive dimension. We show that the Debarre-Voisin varieties specialize, along general $1$-parameter degenerations to these trivectors, to varieties isomorphic or birationally isomorphic to the Hilbert square of a K3 surface.

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。

↑