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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