中文

具有半自由环面作用的素数 Fano 4 维流形

代数几何 2026-02-13 v3

摘要

XX 为光滑复素素数 Fano 四维流形,且具有半自由的 C\mathbb{C}^* 作用,则 XX 包含在族 P4,Q4,W5,X8m\mathbb{P}^4,Q^4,W_5, X^{m}_{8} 中。所有族成员都包含具有半自由 C\mathbb{C}^* 作用的成员。

关键词

引用

@article{arxiv.2510.17230,
  title  = {Prime Fano $4$-folds with semi-free torus actions},
  author = {Nicholas Lindsay},
  journal= {arXiv preprint arXiv:2510.17230},
  year   = {2026}
}

备注

44 pages. In the symplectic result Theorem C the assumption that M is simply connected is needed. Since smooth Fano varieties are simply connected, the proof of the algebraic results Theorem A and Theorem B are not affected. In addition, some misprints are corrected and minor expositional changes are made