a1 Department of Mathematics and Statistics Memorial University of Newfoundland St John's Newfoundland Canada A1B 3X7
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 , and our interest in this problem was rekindled by the recent paper of Mehrvarz and Wallace , who carried out the classification in the case where R contains a nilpotent prime ideal.
(Received May 14 1986)
* This work was supported in part by NSERC grant A-8775.