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arXiv 1707.07802math.QAmath.RT
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量子Borel代数的扭

Twists of quantum Borel algebras

Cris Negron

摘要:

本文对Frobenius-Lusztig核u_q(g)中的量子Borel子代数u_q(b)进行Drinfeld twists分类,其中g是C上的单李代数,q是单位根的奇单位根.更具体地说,我们证明了在一定的代数群作用下,uq(b)的类群群的特征标群上的交错形式生成uq(b)的所有twists.这意味着霍普夫代数的一个简单的分类,其表示范畴与u_q(b)的表示范畴是张量等价的。我们还证明了相应的De Concini-Kac代数的上圈扭在上述特征标群上是具有交替形式的双射。

英文摘要:

We classify Drinfeld twists for the quantum Borel subalgebra u_q(b) in the Frobenius-Lusztig kernel u_q(g), where g is a simple Lie algebra over C and q an odd root of unity. More specifically, we show that alternating forms on the character group of the group of grouplikes for u_q(b) generate all twists for u_q(b), under a certain algebraic group action. This implies a simple classification of Hopf algebras whose categories of representations are tensor equivalent to that of u_q(b). We also show that cocycle twists for the corresponding De Concini-Kac algebra are in bijection with alternating forms on the aforementioned character group.

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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