中文

关于正特征Calabi-Yau三维流形的Kodaira型消失

代数几何 2017-02-15 v3

摘要

考虑特征p>0p>0的代数闭域kk上不可提升到特征00的Calabi-Yau三维流形XX,或p=2p=2时可提升的Calabi-Yau三维流形。目前尚不清楚这些簇是否满足Kodaira消失定理。本文中,若LL是一个丰沛除子且H1(X,L1)0H^1(X, L^{-1})\ne{0},我们给出了h1(X,L1)=dimkH1(X,L1)h^1(X, L^{-1})=\dim_k H^1(X, L^{-1})的一个下界。此外,我们证明了若XX是Schröer簇或Schoen簇,则Kodaira型消失成立,这推广了之前关于Hirokado簇的类似结果。我们证明了对于Picard簇无pp-挠的Calabi-Yau流形,此类消失成立。同时,我们证明了修正的Raynaud-Mukai构造不会产生Kodaira消失的反例。

关键词

引用

@article{arxiv.1308.4228,
  title  = {On Kodaira type vanishing for Calabi-Yau threefolds in positive characteristic},
  author = {Yukihide Takayama},
  journal= {arXiv preprint arXiv:1308.4228},
  year   = {2017}
}

备注

9 pages, besides a few minor refinements, a serious error in the proof of Theorem 3 has been fixed together with an additional condition. Also the consequences of Theorem 3 have been also refined. We also add Theorem 18