非可向Lefschetz纤维的方向双覆盖
几何拓扑
2025-10-23 v2
摘要
本文证明,标准方向双覆盖映射与非可向Lefschetz纤维的组合构成一种恒向性Lefschetz纤维,并具体说明了该组合的单调因子分解。作为这些结果的应用,我们还给出三种关于非可向Lefschetz纤维单调因子分解的变换,这些变换不会改变其同构类,通过类似于可向Lefschetz纤维的结果得出。
关键词
引用
@article{arxiv.2509.06624,
title = {Orientation double covers of non-orientable Lefschetz fibrations},
author = {Tomoya Yoshikawa},
journal= {arXiv preprint arXiv:2509.06624},
year = {2025}
}
备注
19 pages, 3 figures, we corrected several minor typos and revised and added some expressions. We also changed the proof of Corollary 4.3