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arXiv 2001.03818math.RTmath.QA
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$\imath$量子群的Serre-Lusztig关系

Serre-Lusztig relations for $\imath$quantum groups

Xinhong Chen, Ming Lu, Weiqiang Wang

摘要:

设$(\bf U, \bf U^\imath)$是Kac-Moody型量子对称对。$\imath$量子群$\bf U^\imath$和泛$\imath$量子群$\widetilde{\bf U}^\imath$可以看作是量子群和Drinfeld双$\widetilde{\bf U}$的推广。本文利用$\imath$的幂除公式建立了$\imath$量子群的Serre-Lusztig关系,它是量子群的Lusztig高阶Serre关系的$\imath$ -模拟.这可以应用于$\imath$量子群上的辫群对称性。

英文摘要:

Let $(\bf U, \bf U^\imath)$ be a quantum symmetric pair of Kac-Moody type. The $\imath$quantum groups $\bf U^\imath$ and the universal $\imath$quantum groups $\widetilde{\bf U}^\imath$ can be viewed as a generalization of quantum groups and Drinfeld doubles $\widetilde{\bf U}$. In this paper we formulate and establish Serre-Lusztig relations for $\imath$quantum groups in terms of $\imath$divided powers, which are an $\imath$-analog of Lusztig's higher order Serre relations for quantum groups. This has applications to braid group symmetries on $\imath$quantum groups.

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