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arXiv math/0107098math.QA
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关于小量子群的中心

On the center of the small quantum group

Anna Lachowska

摘要:

利用量子傅里叶变换F描述了小量子群u_l中心的子代数Z + F(Z)在单位根上的块分解和乘法结构.它包含了已知的子代数Z,Z同构于u_l上有限维模的特征标代数。证明了交$Z \cap F(Z)$与Z的根的零化子重合。在sl_2的情况下,u_l的整个中心与所得到的子代数Z + F(Z)重合,且大于一般情况下的中心。

英文摘要:

Using the quantum Fourier transform F, we describe the block decomposition and multiplicative structure of a subalgebra Z + F(Z) in the center of the small quantum group u_l at a root of unity. It contains the previously known subalgebra Z, which is isomorphic to the algebra of characters of finite dimensional modules over u_l. We prove that the intersection $Z \cap F(Z)$ coincides with the annihilator of the radical of Z. The whole center of u_l coincides with the obtained subalgebra Z + F(Z) in case of sl_2, and is bigger than that in general.

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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