Cubic surfaces and Borcherds products
Cubic surfaces and Borcherds products
复制标题
立方表面和 Borcherds 产品
DOI:
10.1007/s00014-002-8340-4
复制
发表时间:
2000
影响因子:
0.9
通讯作者:
E. Freitag
中科院分区:
文献类型:
--
作者:
Daniel Allcock;E. Freitag
Abstract. We apply Borcherds' methods for constructing automorphic forms to embed the moduli space
$ \mathcal{M} $ of marked complex cubic surfaces into
$ \mathbb{C}P^9 $. Specifically, we construct 270 automorphic forms on the complex 4-ball
$ \mathcal{B}_4 $, automorphic with respect to a particular discrete group
$ \Gamma $. We use the identification from [ACT2] of
$ \mathcal{M} $ with the Baily-Borel compactification of
$ \mathcal{B}_4 / \Gamma $. Our forms span a 10-dimensional space, and we exhibit the image of
$ \mathcal{M} $ in
$ \mathbb{C}P^9 $ as the intersection of 270 cubic hypersurfaces. Finally, we interpret the pairwise ratios of our forms as the original invariants of cubic surfaces, the cross-ratios introduced by Cayley. It turns out that this model of
$ \mathcal{M} $ was found by Coble [C] in an entirely different way; see [vG].