On the structure of quantum automorphism groups
On the structure of quantum automorphism groups
复制标题
DOI:
10.1515/crelle-2014-0141
复制
发表时间:
2014-11
期刊:
影响因子:
--
通讯作者:
Christian Voigt
中科院分区:
文献类型:
--
作者:
Christian Voigt
We compute the $ K $-theory of quantum automorphism groups of finite dimensional $ C^* $-algebras in the sense of Wang. The results show in particular that the $ C^* $-algebras of functions on the quantum permutation groups $ S_n^+ $ are pairwise non-isomorphic for different values of $ n $. Along the way we discuss some general facts regarding torsion in discrete quantum groups. In fact, the duals of quantum automorphism groups are the most basic examples of discrete quantum groups exhibiting genuine quantum torsion phenomena.