环簇乘积的自同构
代数几何
2022-11-29 v2
摘要
我们针对任意域上完备环簇的乘积,用其各分量的相应自同构群给出了其自同构群的显式描述。更确切地说,我们证明:在允许同构分量置换的前提下,乘积的自同构对应于其各分量自同构的乘积。我们还以现代语言重新证明了 Demazure 的经典结果,即描述了任意域上完备环簇的自同构群概型。
引用
@article{arxiv.2101.03600,
title = {Automorphisms of products of toric varieties},
author = {Alvaro Liendo and Giancarlo Lucchini Arteche},
journal= {arXiv preprint arXiv:2101.03600},
year = {2022}
}
备注
v2: Final version, 7 pages. Modified the layout of the results and the introduction, but the math is the same