三维流形群的可测上循环的 Borel 不变量
几何拓扑
2022-01-03 v3
摘要
我们引入沿可测上循环的拉回概念,并用它将 Bucher、Burger 与 Iozzi 所研究的 Borel 不变量推广至可测上循环的世界。Borel 不变量在上同调类上恒定且具有有界的绝对值。这允许定义极大上循环。我们最后证明极大上循环实际上可平凡化到不可约表示的限制。
引用
@article{arxiv.1907.02525,
title = {Borel invariant for measurable cocycles of 3-manifold groups},
author = {Alessio Savini},
journal= {arXiv preprint arXiv:1907.02525},
year = {2022}
}
备注
22 pages. The paper has been rewritten. The exposition has been improved. Existence of boundary map added. To appear on J. Top. Anal