中文

CAT(0)群的有限表现子群的发散性

群论 2022-03-09 v1

摘要

我们构造了包含有限表现群的 CAT(0)CAT(0) 群族,这些有限表现群的发散函数为形如 rαr^\alpha(对稠密集 α[2,)\alpha \in [2,\infty) 中的指数)以及 rqlog(r)r^q\log(r)(对整数 q2q \geq 2)。同一构造还给出了包含收缩元素的 CAT(0)CAT(0) 群的例子,这些元素在某些有限表现子群中并非收缩的。

关键词

引用

@article{arxiv.2012.15803,
  title  = {Divergence of finitely presented subgroups of CAT(0) groups},
  author = {Noel Brady and Hung Cong Tran},
  journal= {arXiv preprint arXiv:2012.15803},
  year   = {2022}
}

备注

39 pages, 6 figures, and 1 table. The proof of the main divergence theorem in this paper is similar in outline to that in arXiv:2002.03653 but there are significant technical differences