中文

关于平面曲线相交的一点注记

代数几何 2019-01-08 v4

摘要

DDP2\mathbb{P}^2 中次数 d=2ϵd=2\ell-\epsilon 的极一般曲线,其中 ϵ{0,1}\epsilon\in \{0,1\}。设 ΓP2\Gamma \subset \mathbb{P}^2 为几何亏格 gg 且次数 mm 的整曲线,ΓD\Gamma \neq D,并令 ν:CΓ\nu: C\to \Gamma 为正规化。设 δ\deltaCC 的除子 ν(D)\nu^*(D) 的\emph{模2约化}的次数。本文证明不等式 4g+δm(d8+2ϵ)+54g+\delta\geqslant m(d-8+2\epsilon)+5。我们将其与 Geng Xu 和 Xi Chen 所得的类似不等式进行比较。此外,我们简要叙述了射影超曲面中子簇的亏格。

关键词

引用

@article{arxiv.1704.00320,
  title  = {A remark on the intersection of plane curves},
  author = {C. Ciliberto and F. Flamini and M. Zaidenberg},
  journal= {arXiv preprint arXiv:1704.00320},
  year   = {2019}
}

备注

to appear in Cont. Math. ("Selim Krein Centennial"), pp. 1-19. Collaboration has benefitted by "MIUR Excellence Department Project" Dep. of Mathematics, University of Rome Tor Vergata, CUP E83C18000100006, grant 346300 for "IMPAN" from the "Simons Foundation"(code: BCSim-2018-s09), funds "Mission Sustainability 2017 - Fam Curves" CUP E81-18000100005 (Tor Vergata)