Editorial

摘要

Professor Vera Pless has been preeminent in the development of much of the algebraic theory of error-correcting codes. She is well-known for 'Pless power moments' which are an infinite family of equations relating to the weight distribution of the code to the weight distribution of its dual code. This family, although equivalent to the MacWilliams equations, is particularly useful in showing uniqueness of certain solutions. She is the first person to start the classification of binary self-dual codes in 1972 and also find the Pless symmetry codes and new 5-designs in 1972. This classification problem has expanded to the classification of self-dual codes over finite fields and finite rings, one of the most active research areas.