正特征下具有有理双点del Pezzo曲面的奇点类型
代数几何
2020-08-18 v2
摘要
在本文中,我们证明了一个具有有理双点的del Pezzo曲面的最小分解对,其一般反典则元光滑且其例外除子提升到Witt环。我们还分类了所有反典则元均奇异的具有有理双点的del Pezzo曲面。作为推论,我们确定了仅出现在正特征下的具有有理双点的del Pezzo曲面的所有奇点类型。
引用
@article{arxiv.2006.04457,
title = {On singularity types of del Pezzo surfaces with rational double points in positive characteristic},
author = {Tatsuro Kawakami and Masaru Nagaoka},
journal= {arXiv preprint arXiv:2006.04457},
year = {2020}
}
备注
This preprint has been withdrawn by the authors because all results have been contained in our new preprint