Article ID Journal Published Year Pages File Type
4655929 Journal of Combinatorial Theory, Series A 2010 4 Pages PDF
Abstract

Type II Z4-codes are a remarkable class of self-dual Z4-codes. A Type II Z4-code of length n exists if and only if n is divisible by eight. For lengths up to 48, extremal Type II Z4-codes are known. In this note, extremal Type II Z4-codes of lengths 56 and 64 are constructed for the first time.

Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics