中文

三维流形群中挠元的中心化子

几何拓扑 2021-11-19 v2

摘要

我们证明:若 PP 是一个 PD3PD_3-复形且 gπ1(P)g\in\pi_1(P) 具有有限阶 >1>1 且中心化子无限,则 π1(P)\pi_1(P) 可收缩到 Z/2ZZZ/2Z\oplus\mathbb{Z}。若 PP 是不可约闭三维流形,则由射影平面定理可知 PRP2×S1P\cong{RP^2}\times{S^1}

关键词

引用

@article{arxiv.2111.01284,
  title  = {Centralizers of torsion in 3-manifold groups},
  author = {Jonathan A. Hillman},
  journal= {arXiv preprint arXiv:2111.01284},
  year   = {2021}
}

备注

v2: added three questions relating to possible analogues of the Projective Plane Theorem, and a new section giving alternative arguments due (separately) to J.S. Crisp and G.A. Swarup