中文

正特征域上三维簇的 Iitaka $C_{n,m}$ 猜想

代数几何 2018-06-26 v5

摘要

本文中,我们证明对于从光滑射影三维簇 XX 到光滑射影曲线 ZZ 的纤维化 f:XZf:X\to Z,在特征 chark=p>5\mathrm{char} k =p >5 的代数闭域 kk 上,若几何一般纤维 XηX_{\overline\eta} 光滑,则 Kodaira 维数的次可加性成立,即 κ(X)κ(Xη)+κ(Z).\kappa(X)\ge\kappa(X_{\overline\eta})+\kappa(Z).

关键词

引用

@article{arxiv.1604.01856,
  title  = {Iitaka's $C_{n,m}$ conjecture for 3-folds in positive characteristic},
  author = {Sho Ejiri and Lei Zhang},
  journal= {arXiv preprint arXiv:1604.01856},
  year   = {2018}
}

备注

14 pages, v2: minor revisions, v3: Correction of the proof of the main theorem for the case where the Kodaira dimension of the generic fiber is one. v4: final version, to appear in Math. Res. Lett, v5: References corrected