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arXiv 1504.02240math.OA
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量子isometry群的对偶生成离散群- $\textrm{II}$

Quantum isometry group of dual of finitely generated discrete groups- $\textrm{II}$

Arnab Mandal

摘要:

作为Goswami和Mandal(2014)计划的贡献,我们对$\mathbb{Q}(Γ,S)$进行了显式计算,这是$C_{r}^{*}(Γ)$上正则谱三元组的量子等距群,来自对应于有限生成集S的字长函数,对于Goswami和Mandal(2014)未涵盖的$Γ$的几个有趣例子。其中包括3个生成元的辫子群、$\mathbb{Z}_4^{*n}$等。此外,我们给出了量子群$H_s^{+}(n,0)$和$K_n^{+}$(在Banica和Skalski(2012),Banica和Skalski(2013)中研究)的自由圈积的另一种描述。在最后一节中,我们给出了几个新的群的例子,其中$\mathbb{Q}(Γ)$是$C^*(Γ)$的加倍。

英文摘要:

As a contribution of the programme of Goswami and Mandal (2014), we carry out explicit computations of $\mathbb{Q}(Γ,S)$, the quantum isometry group of the canonical spectral triple on $C_{r}^{*}(Γ)$ coming from the word length function corresponding to a finite generating set S, for several interesting examples of $Γ$ not covered by the previous work Goswami and Mandal (2014). These include the braid group of 3 generators, $\mathbb{Z}_4^{*n}$ etc. Moreover, we give an alternative description of the quantum groups $H_s^{+}(n,0)$ and $K_n^{+}$ (studied in Banica and Skalski (2012), Banica and Skalski (2013)) in terms of free wreath product. In the last section we give several new examples of groups for which $\mathbb{Q}(Γ)$ turn out to be doubling of $C^*(Γ)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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