# Modules over group rings of groups with restrictions on the system of all proper subgroups

Document Type: Research Paper

Author

Professor of the Branch of Moscow state university in Sevastopol

Abstract

We consider the class $\mathfrak M$ of $\bf R$--modules where $\bf R$ is an associative ring. Let $A$ be a module over a group ring $\bf R$$G, G be a group and let \mathfrak L(G) be the set of all proper subgroups of G. We suppose that if H \in \mathfrak L(G) then A/C_{A}(H) belongs to \mathfrak M. We investigate an \bf R$$G$--module $A$ such that $G \not = G'$, $C_{G}(A) = 1$. We study the cases: 1) $\mathfrak M$ is the class of all artinian $\bf R$--modules, $\bf R$ is either the ring of integers or the ring of $p$--adic integers; 2) $\mathfrak M$ is the class of all finite $\bf R$--modules, $\bf R$ is an associative ring; 3) $\mathfrak M$ is the class of all finite $\bf R$--modules, $\bf R$$=F$ is a finite field.

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