Right coideal subalgebras of the Borel part of a quantized enveloping algebra

Right coideal subalgebras of the Borel part of a quantized enveloping algebra
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量化包络代数的 Borel 部分的右共理想子代数

DOI:
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发表时间:
2009
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影响因子:
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通讯作者:
Steffen Kolb
Steffen Kolb
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文献类型:
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作者:
I. Heckenberger;Steffen Kolb

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对于量化包络代数的 Borel 部分,我们对所有右余理想子代数进行分类,其与余根的交集是 Hopf 代数。结果用量化包络代数的子代数 U+[w] 的特征表示,由 de Concini、Kac 和 Procesi 针对任何 Weyl 群元素 w 引入。我们基于 Yakimov 最近关于 U+[w] 素理想的工作,明确确定了 U+[w] 的所有特征,这些素理想在环面作用下是不变的。
For the Borel part of a quantized enveloping algebra, we classify all right coideal subalgebras for which the intersection with the coradical is a Hopf algebra. The result is expressed in terms of characters of the subalgebras U+[w] of the quantized enveloping algebra, introduced by de Concini, Kac, and Procesi for any Weyl group element w. We explicitly determine all characters of U+[w] building on recent work by Yakimov on prime ideals of U+[w] which are invariant under a torus action.