Right coideal subalgebras of the Borel part of a quantized enveloping algebra
Right coideal subalgebras of the Borel part of a quantized enveloping algebra
复制标题
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
期刊:
影响因子:
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通讯作者:
Steffen Kolb
中科院分区:
文献类型:
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作者:
I. Heckenberger;Steffen Kolb
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.