简单正规交叉理想层的更高直接像
代数几何
2023-10-17 v3 交换代数
摘要
在任意特征下,假设关于正规Cohen-Macaulay化存在的猜想成立,我们证明了简单正规交叉除子的理想层上同调群在配对的一类受限双有理态射下的不变性结果。作为应用,我们将有理配对理论中此前仅在特征0已知的若干基础性结果推广至一般情形。
引用
@article{arxiv.2207.01142,
title = {Higher direct images of snc ideal sheaves},
author = {Charles Godfrey},
journal= {arXiv preprint arXiv:2207.01142},
year = {2023}
}
备注
Comments welcome! V2: title updated to more specifically describe results, some repetitive parts of proofs consolidated into lemmas. V3: added necessary conjecture on existence of normal Cohen-Macaulayfications