中文

通过 2-Calabi-Yau 范畴的 Deligne-Simpson 问题

代数几何 2026-04-14 v2 表示论

摘要

我们给出了 Crawley-Boevey 在其 Deligne-Simpson 问题解法中所需条件的简洁性证明。该证明依赖于 Davison 关于 2-Calabi-Yau 范畴的局部邻域定理,以及 Crawley-Boevey 关于存在具有指定穿孔处单值化共轭类的局部系统的充分条件。

关键词

引用

@article{arxiv.2604.06991,
  title  = {The Deligne-Simpson problem via 2-Calabi-Yau categories},
  author = {Lucien Hennecart},
  journal= {arXiv preprint arXiv:2604.06991},
  year   = {2026}
}

备注

There is a mistake in the way Theorem 3.3 is formulated, leading to a gap in the proof, as it currently assumes implicitly connectedness of some moduli spaces