中文

关于 K3 曲面上具有三重点的曲线的存在性

代数几何 2012-09-05 v4

摘要

(S,H)(S,H) 为亏格 \p\p 的一般本原极化 K3K3 曲面,pa(nH)p_a(nH)nHnH 的算术亏格。我们证明了在 OS(nH)|\mathcal O_S(nH)| 中存在具有三重点和 AkA_k 奇点的曲线。特别地,我们证明了对于所有 1gpa(nH)31\leq g\leq p_a(nH)-3(\p,n)(4,1)(\p,n)\neq (4,1),在 OS(nH)|\mathcal O_S(nH)| 中存在几何亏格为 gg、以三重点和结点为奇点且对应于其等奇变形轨迹中正则点的曲线。我们的结果是通过研究非平面四重点的泛变形空间获得的。

关键词

引用

@article{arxiv.1111.3051,
  title  = {On the existence of curves with a triple point on a K3 surface},
  author = {Concettina Galati},
  journal= {arXiv preprint arXiv:1111.3051},
  year   = {2012}
}

备注

18 pages; 2 figures; references updated; typos corrected; minor changes in the abstract and in the statement of Lemma 4.1 and Theorem 1.1; a mistake in the proof of Theorem 1.1 corrected; Remark 4.4 added; statement of Corollary 4.3 corrected; final version incorporating the referees corrections. To appear on Rend. Lincei Math. Appl