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arXiv 0912.3159math.RAmath.KT
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泛变形公式与辫模代数

Universal deformation formulas and braided module algebras

Jorge A. Guccione, Juan J. Guccione, Christian Valqui

摘要:

研究了由Witherspoon引入的一个泛变形公式导出的多项式代数与群的交叉积$S(V)#_f G$的形式变形。这些变形是由霍普夫代数的自同构和斜导算子产生的辫状作用引起的。我们表明,他们是非平凡的特征自由的上下文中,即使$G$是无限的,通过显示,他们的无穷小不是coboundaries。为此,我们构造了一个新的复杂的计算Hochschild上同调的$S(V)#_f G$。

英文摘要:

We study formal deformations of a crossed product $S(V)#_f G$, of a polynomial algebra with a group, induced from a universal deformation formula introduced by Witherspoon. These deformations arise from braided actions of Hopf algebras generated by automorphisms and skew derivations. We show that they are nontrivial in the characteristic free context, even if $G$ is infinite, by showing that their infinitesimals are not coboundaries. For this we construct a new complex which computes the Hochschild cohomology of $S(V)#_f G$.

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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