中文

关于模块群的 Pappus 表示与 Anosov 表示

几何拓扑 2026-05-18 v1

摘要

X=SL3(R)/SO(3)X=SL_3(\R)/SO(3)。设 DFR\cal DFR 为模块群进入 Isom\/(X){\rm Isom\/}(X) 中离散忠实表示的空间,这些表示将阶为 2 的生成元映射为唯一固定点的等距变换。在本文中,我们证明 DFR\cal DFR 包含一个称为 Barbot 组件 (B\cal B) 的连通分量,其拓扑等价于 R2×[0,)\R^2 \times [0,\infty)B\cal B 的边界参数化了 Pappus 表示,而其内部则由 Anosov 表示构成。

关键词

引用

@article{arxiv.2605.15317,
  title  = {On Pappus and Anosov Representations of the Modular Group},
  author = {Richard Evan Schwartz},
  journal= {arXiv preprint arXiv:2605.15317},
  year   = {2026}
}

备注

This is an edited and improved subset of a very long paper of mine, arXiv:2412.18547. In this shorter paper I isolate one of the main results and give a self-contained proof. I also take the opportunity to fix a few glitches and add some helpful details. Computer assisted - Mathematica files downloadable from my website