The Unit Group of Small Group Algebras and the Minimum Counterexample to the Isomorphism Problem

Details The Unit Group of Small Group Algebras and the Minimum Counterexample to the Isomorphism Problem The Unit Group of Small Group Algebras and the Minimum Counterexample to the Isomorphism Problem

2009-05-26

arxiv.org/abs/0905.4295v1

Mathematics

Rings and Algebras

6 pages

Scientific paper

Let $KG$ denote the group algebra of the group $G$ over the field $K$ and let
$U(KG)$ denote its group of units. Here without the use of a computer we give
presentations for the unit groups of all group algebras $KG$, where the size of
$KG$ is less than 1024. As a consequence we find the minimum counterexample to
the Isomorphism Problem for group algebras.

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