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arXiv 1508.04548math.RA
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关于有限射影特殊线性群的整群环的扭单位

On the torsion units of the integral group ring of finite projective special linear groups

Ángel del Río, Mariano Serrano

摘要:

H. J.Zassenhaus证明了有限群$G$的整群环中的任意有穷级增广单位在有理群代数中共轭于$G$的一个元素。验证这一点的一种方法是证明这样的单元具有与$G$的元素相同的部分增广分布,并且HeLP方法在某些情况下提供了这样做的工具。本文用HeLP方法描述了关于特殊线性群的猜想的一个假设反例的部分扩充。

英文摘要:

H. J. Zassenhaus conjectured that any unit of finite order and augmentation one in the integral group ring of a finite group $G$ is conjugate in the rational group algebra to an element of $G$. One way to verify this is showing that such unit has the same distribution of partial augmentations as an element of $G$ and the HeLP Method provides a tool to do that in some cases. In this paper we use the HeLP Method to describe the partial augmentations of a hypothetical counterexample to the conjecture for the projective special linear groups.

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