NEW DOUBLY EVEN SELF-DUAL CODES HAVING MINIMUM WEIGHT 20

摘要

In this note, we construct new doubly even self-dual codes having minimum weight 20 for lengths 112, 120 and 128. This implies that there are at least three inequivalent extremal doubly even self-dual codes of length 112.

关键词

Self-dual code doubly even code four-circulant code minimum weight neighbor