Planar algebra of the subgroup-subfactor

Planar algebra of the subgroup-subfactor
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子群子因子的平面代数

DOI:
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发表时间:
2008
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通讯作者:
V. Gupta
V. Gupta
中科院分区:
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文献类型:
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作者:
V. Gupta

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给出了二分图的子群子因子R <$H <$R <$G的平面代数与二分图的平面代数的G-不变平面子代数之间的一个等价关系,其中n = [G:H].在这一识别过程中,关键的一步是给出基本结构塔的模型,然后给出R <$H <$R <$G的标准不变量的算子矩阵表示,并得到了固定代数子因子RG <$RH的平面代数与★n的“翻转”平面代数的G-不变平面子代数之间的一个识别。
We give an identification between the planar algebra of the subgroupsubfactor R ⋊ H ⊂ R ⋊ G and the G-invariant planar subalgebra of the planar algebra of the bipartite graph ★n, where n = [G: H]. The crucial step in this identification is an exhibition of a model for the basic construction tower, and thereafter of the standard invariant of R ⋊ H ⊂ R ⋊ G in terms of operator matrices.We also obtain an identification between the planar algebra of the fixed algebra subfactor RG ⊂ RH and the G-invariant planar subalgebra of the planar algebra of the ‘flip’ of ★n.