Suppose $p$ is a prime number and $R$ is a commutative ring with unity of characteristic 0 in which $p$ is not a unit. Assume that $G$ and $H$ are $p$-primary abelian groups such that the respective group algebras $RG$ and $RH$ are $R$-isomorphic. Under certain restrictions on the ideal structure of $R$, it is shown that $G$ and $H$ are isomorphic.
@article{118726,
author = {William Ullery},
title = {A note on group algebras of $p$-primary abelian groups},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {36},
year = {1995},
pages = {11-14},
zbl = {0828.20005},
mrnumber = {1334408},
language = {en},
url = {http://dml.mathdoc.fr/item/118726}
}
Ullery, William. A note on group algebras of $p$-primary abelian groups. Commentationes Mathematicae Universitatis Carolinae, Tome 36 (1995) pp. 11-14. http://gdmltest.u-ga.fr/item/118726/
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