中文

Apéry-Fermi铅笔K3曲面之间的同源映射

代数几何 2024-10-11 v3

摘要

属于Apéry-Fermi铅笔(YkY_k)的K3K3曲面的椭圆纤维化可能具有2233阶挠截面,在(Yk)(Y_k)上定义阶为2233的自同构τ\tau。首先考虑奇异K3K3曲面Y10Y_{10}某些纤维化在二阶挠截面情形下的Yk/τY_{k}/\tau,并如同奇异曲面Y2Y_{2}那样得到与Y10Y_{10}相关的Kummer曲面或Y10Y_{10}自身。最后一种情况与Y10Y_{10}上的复乘法相关。我们还证明对于Y2Y_{2}所有具33阶挠截面的纤维化均有Y2/τ=Y10Y_{2}/\tau=Y_{10}。对于Y10Y_{10}结果不同,其中Y10/τY_{10}/\tau可得具有超越格[4018][4 \quad 0\quad 18][2036]\left[2 \quad 0 \quad 36\right]的两曲面之一。我们还显式地联系了纤维化上的33-同源与另一些纤维化上的基变换。

关键词

引用

@article{arxiv.2203.04151,
  title  = {Isogenies between $K3$ surfaces of the Ap\'ery-Fermi pencil},
  author = {Marie José Bertin and Odile Lecacheux},
  journal= {arXiv preprint arXiv:2203.04151},
  year   = {2024}
}

备注

39 pages. The difference with the earlier versions is that certain results have been proved with new methods. arXiv admin note: substantial text overlap with arXiv:2006.16108