Stein 填充与 Milnor 纤维的比较
几何拓扑
2025-04-14 v2 代数几何
辛几何
摘要
给定一个带有其标准接触结构的正规曲面奇点的链环,我们比较其 Stein 填充的集合与其 Milnor 填充(即可能光滑化的 Milnor 纤维)的集合。我们证明,与 Stein 填充不同,给定链环的 Milnor 填充具有有界拓扑;对于夹层奇点的链环,我们进一步证明只存在有限多个 Milnor 填充。我们讨论了 Stein 填充可由 Milnor 纤维表示的其他一些障碍,并针对各种类型的奇点,包括尖点和三角形奇点等简单类别,构造了并非来自 Milnor 纤维或消解的 Stein 填充。
引用
@article{arxiv.2403.12216,
title = {Stein fillings vs. Milnor fibers},
author = {R. Inanc Baykur and A. Nemethi and O. Plamenevskaya},
journal= {arXiv preprint arXiv:2403.12216},
year = {2025}
}
备注
v2 includes several clarifications and removes Theorem 6 (whose proof had a gap), as well as the appendix by Plamenevskaya and Starkston (which will appear in their upcoming work instead)