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arXiv 0810.0088math.QAmath.RT
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可对称化Kac-Moody代数R-矩阵的半扭型公式

A half-twist type formula for the R-matrix of a symmetrizable Kac-Moody algebra

Peter Tingley

摘要:

Kirillov-Reshetikhin和Levendorskiii-Soibelman发展了一个通用R-矩阵的公式,形式为R=(X^{-1} \otimes X^{-1})Δ(X)。X在表示V上的作用根据外尔群中的最长元素置换权空间,因此仅定义在有限型中。本文给出了一个类似的公式,该公式适用于任意可对称化Kac-Moody代数的量子化泛包络代数.这是通过将X在V上的作用替换为保持权空间的自同态来实现的,但它是条线性的而不是线性的。

英文摘要:

Kirillov-Reshetikhin and Levendorskii-Soibelman developed a formula for the universal R-matrix of the form R=(X^{-1} \otimes X^{-1}) Δ(X). The action of X on a representation V permutes weight spaces according to the longest element in the Weyl group, so is only defined in finite type. We give a similar formula which is valid for the quantized universal enveloping algebra of any symmetrizable Kac-Moody algebra. This is done by replacing the action of X on V with an endomorphism that preserves weight spaces, but which is bar-linear instead of linear.

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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