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arXiv 1801.08855math.RAmath.RT
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色李环与斜群代数的PBW变形

Color Lie rings and PBW deformations of skew group algebras

S. Fryer, T. Kanstrup, E. Kirkman, A. V. Shepler, S. Witherspoon

摘要:

研究了有限群代数上的色李环及其泛包络代数。我们将这些泛包络代数表示为斜群代数的PBW变形:有限群代数上具有特定Yetter-Drinfeld结构的每个色李环都有泛包络代数,它是量子Drinfeld orbifold代数.相反,由交换阿贝尔群的作用产生的特定类型的量子Drinfeld轨道代数是群代数上的某种色李环的泛包络代数。一个结果是这些量子Drinfeld orbifold代数是辫子霍普夫代数。

英文摘要:

We investigate color Lie rings over finite group algebras and their universal enveloping algebras. We exhibit these universal enveloping algebras as PBW deformations of skew group algebras: Every color Lie ring over a finite group algebra with a particular Yetter-Drinfeld structure has universal enveloping algebra that is a quantum Drinfeld orbifold algebra. Conversely, every quantum Drinfeld orbifold algebra of a particular type arising from the action of an abelian group is the universal enveloping algebra of some color Lie ring over the group algebra. One consequence is that these quantum Drinfeld orbifold algebras are braided Hopf algebras.

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