Mathematics, Department of


Date of this Version



Published in IEEE Transactions on Information Theory, vol 43, iss 5 (Sept 1997), pp 1588-1593.

DOI: 10.1109/18.623154


The techniques of algebraic geometry have been widely and successfully applied to the study of linear codes over finite field since the early 1980’s. Recently, there has been an increased interest in the study of linear codes over finite rings. In a previous paper [10], we combined these two approaches to coding theory by introducing and studying algebraic-geometric codes over rings. In this correspondence, we show that the Nordstrom–Robinson code is the image under the Gray mapping of an algebraic geometric code over Z = 4Z.