关于恩里克斯曲面的布饶尔群
代数几何
2009-03-16 v3
摘要
设S是一个复恩里克斯曲面;它是K3曲面X在无不动点对合下的商。布饶尔群Br(S)有一个唯一的非零元素。我们描述了它在Br(X)中的拉回,并证明了使得该拉回平凡的那些曲面S在恩里克斯曲面的模空间中构成一个可数并集。
引用
@article{arxiv.0902.3721,
title = {On the Brauer group of Enriques surfaces},
author = {Arnaud Beauville},
journal= {arXiv preprint arXiv:0902.3721},
year = {2009}
}
备注
Minor modifications; in particular, Proposition 4.1 is put in a more general setting. v3: minor improvements in the presentation