NEW EXTREMAL FORMALLY SELF-DUAL EVEN CODES OF LENGTH 30

被引:2
|
作者
Harada, Masaaki [1 ]
Waki, Katsushi [1 ]
机构
[1] Yamagata Univ, Dept Math Sci, Yamagata 9908560, Japan
关键词
Formally self-dual even code; extremal code; double circulant code; CLASSIFICATION;
D O I
10.3934/amc.2009.3.311
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
There are extremal formally self-dual even codes which are not self-dual only for lengths 6, 10, 12, 14, 18, 20, 22, 28 and 30. The only length for which the classification has not been done yet is 30. In this note, new extremal formally self-dual even codes of length 30 are constructed using symmetric matrices.
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页码:311 / 316
页数:6
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