Remarks on the derived center of small quantum groups
Remarks on the derived center of small quantum groups
复制标题
关于小量子群的导出中心的评论
DOI:
10.1007/s00029-021-00686-7
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Qi, You
中科院分区:
文献类型:
--
作者:
Lachowska, Anna;Qi, You
Letbe the small quantum group associated with a complex semisimple Lie algebraand a primitive root of unityq, satisfying certain restrictions. We establish the equivalence between three different actions ofon the center ofand on the higher derived center of. Based on the triviality of this action for, we conjecture that, in finite typeA, central elements of the small quantum grouparise as the restriction of central elements in the big quantum group. We also study the role of an idealknown as the Higman ideal in the center of. We show that it coincides with the intersection of the Harish-Chandra center and its Fourier transform, and compute the dimension ofin typeA. As an illustration we provide a detailed explicit description of the derived center ofand its various symmetries.
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