编织Higman-Thompson群近亲的有限性质

Pub Date : 2021-03-24 DOI:10.4171/ggd/731
Rachel Skipper, Xiaolei Wu
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引用次数: 5

摘要

我们研究了标签为$H\leq B_d$的编结Higman—Thompson群$bV_{d,r}(H)$和标签为$H\leq PB_d$的编结Higman—Thompson群$bF_{d,r}(H)$和$bT_{d,r}(H)$的有限性质,其中$B_d$是包含$d$字符串的编结群,$PB_d$是它的纯编结子群。我们表明,对于所有$d\geq 2$和$r\geq 1$,组$bV_{d,r}(H)$(参见:$bT_{d,r}(H)$或$bF_{d,r}(H)$)的类型为$F_n$,当且仅当$H$为。我们的结果尤其证实了阿罗卡和康普里多最近的一个猜想。
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Finiteness properties for relatives of braided Higman–Thompson groups
We study the finiteness properties of the braided Higman--Thompson group $bV_{d,r}(H)$ with labels in $H\leq B_d$, and $bF_{d,r}(H)$ and $bT_{d,r}(H)$ with labels in $H\leq PB_d$ where $B_d$ is the braid group with $d$ strings and $PB_d$ is its pure braid subgroup. We show that for all $d\geq 2$ and $r\geq 1$, the group $bV_{d,r}(H)$ (resp. $bT_{d,r}(H)$ or $bF_{d,r}(H)$) is of type $F_n$ if and only if $H$ is. Our result in particular confirms a recent conjecture of Aroca and Cumplido.
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