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arxiv: 0704.0412 · v1 · submitted 2007-04-03 · 🧮 math.RT · math.RA

Unit groups of integral finite group rings with no noncyclic abelian finite subgroups

classification 🧮 math.RT math.RA
keywords finitegroupexistsintegralnoncyclicsubgroupabelianaugmentation
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It is shown that in the units of augmentation one of an integral group ring $\mathbb{Z} G$ of a finite group $G$, a noncyclic subgroup of order $p^{2}$, for some odd prime $p$, exists only if such a subgroup exists in $G$. The corresponding statement for $p=2$ holds by the Brauer--Suzuki theorem, as recently observed by W. Kimmerle.

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