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arXiv 2001.11551math.QAmath.RT
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量子群伴随作用的范畴化

Categorification of the adjoint action of quantum groups

Laurent Vera

摘要:

设$U$是一个量子化的包络代数。考虑了$U$的一个$\mathfrak{sl}_2$ -子代数在$U^+$的一个子代数上的伴随作用,该子代数对该作用是极大可积的.我们将这种表示在Hecke代数的上下文中进行分类。得到了与$\mathfrak{sl}_2$相关的2-范畴在一类模范畴上的作用.我们的方法类似于Kang-Kashiwara通过分圆代数对最高权模的分解。其中一个主要的新特点是相容性的范畴行动与monoidal结构,分类概念的导子代数。作为某些结果的应用,我们对高阶量子Serre关系进行了分类,将Stošić的结果推广到非简单的情形.

英文摘要:

Let $U$ be a quantized enveloping algebra. We consider the adjoint action of an $\mathfrak{sl}_2$-subalgebra of $U$ on a subalgebra of $U^+$ that is maximal integrable for this action. We categorify this representation in the context of quiver Hecke algebras. We obtain an action of the 2-category associated with $\mathfrak{sl}_2$ on a category of modules over certain quotients of quiver Hecke algebras. Our approach is similar to that of Kang-Kashiwara for categorifications of highest weight modules via cyclotomic quiver Hecke algebras. One of the main new features is a compatibility of the categorical action with the monoidal structure, categorifying the notion of derivation on an algebra. As an application of some of our results, we categorify the higher order quantum Serre relations, extending results of Stošić to the non simply-laced case.

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