On the automorphisms of the group ring of a finitely generated free abelian group
On the automorphisms of the group ring of a finitely generated free abelian group
Let R be an associative ring with 1 and G a finitely generated torsion-free abelian group. In this note, we classify all R -automorphisms of the group ring RG . The special case where G is infinite cyclic was previously settled in [ 8 ], and our interest in this …