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
设 为光滑复素素数 Fano 四维流形,且具有半自由的 作用,则 包含在族 中。所有族成员都包含具有半自由 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