根栈与可容许二重覆盖的上同调不变量
代数几何
2020-10-22 v2
摘要
我们给出了根栈的上同调不变量的一个公式，并将其应用于计算可容许二重覆盖栈的上同调不变量与 Brauer 群。
引用
@article{arxiv.2009.07671,
title = {Cohomological invariants of root stacks and admissible double coverings},
author = {Andrea Di Lorenzo and Roberto Pirisi},
journal= {arXiv preprint arXiv:2009.07671},
year = {2020}
}
备注
17 pages, comments welcome! New version: changed to allow for coefficients in a general cycle module, as in arxiv:2002.11065