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arXiv 1602.07028math.RTmath.GRmath.QA
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交错群的箭图Hecke代数

Quiver Hecke algebras for alternating groups

Clinton Boys, Andrew Mathas

摘要:

本文的主要结果表明,在特征不同于$2$的足够大的域上,交错Hecke代数是$\mathbb{Z}$ -分次代数,它同构于对称群$\mathfrak{S}_n$的交错Hecke代数的不动点子代数.作为一种特殊情况,这表明在特征不同于$2$的足够大的域上,交错群的群代数是$\mathbb{Z}$ -分次代数。我们给出了这些代数的齐次表示,计算了它们的分次维数,并证明了交错群的Hecke代数的块是分次对称代数.

英文摘要:

The main result of this paper shows that, over large enough fields of characteristic different from $2$, the alternating Hecke algebras are $\mathbb{Z}$-graded algebras that are isomorphic to fixed-point subalgebras of the quiver Hecke algebra of the symmetric group $\mathfrak{S}_n$. As a special case, this shows that the group algebra of the alternating group, over large enough fields of characteristic different from $2$, is a $\mathbb{Z}$-graded algebra. We give a homogeneous presentation for these algebras, compute their graded dimension and show that the blocks of the quiver Hecke algebras of the alternating group are graded symmetric algebras.

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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