循环覆盖:Hodge理论与范畴Torelli定理
代数几何
2023-12-11 v2
摘要
设的导出范畴具有矩形Lefschetz分解,并考虑在除子上分歧的循环覆盖。在Kuznetsov与Perry未考虑的情形下,我们定义的等变导出范畴的一个子范畴,它包含而非被包含于。我们随后证明的Kuznetsov分支的等变范畴分解为的若干拷贝。作为一个应用,我们在某些数值假设下将与的上同调联系起来。特别地,我们获得了指标为1和2的最低次素Fano三维簇的范畴Torelli定理。
引用
@article{arxiv.2310.13651,
title = {Cyclic covers: Hodge theory and categorical Torelli theorems},
author = {Hannah Dell and Augustinas Jacovskis and Franco Rota},
journal= {arXiv preprint arXiv:2310.13651},
year = {2023}
}
备注
19 pages. Added a categorical Torelli theorem for prime Fano threefolds of index 2 and degree 1. Slightly weakened the generality assumptions. Other minor changes. Comments welcome!