TY - JOUR
T1 - New extremal formally self-dual even codes of length 30
AU - Harada, Masaaki
AU - Waki, Katsushi
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/11
Y1 - 2009/11
N2 - There are extremal formally self-dual even codes which are not selfdual 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.
AB - There are extremal formally self-dual even codes which are not selfdual 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.
KW - Double circulant code
KW - Extremal code
KW - Formally self-dual even code
UR - http://www.scopus.com/inward/record.url?scp=72049122948&partnerID=8YFLogxK
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U2 - 10.3934/amc.2009.3.311
DO - 10.3934/amc.2009.3.311
M3 - Article
AN - SCOPUS:72049122948
SN - 1930-5346
VL - 3
SP - 311
EP - 316
JO - Advances in Mathematics of Communications
JF - Advances in Mathematics of Communications
IS - 4
ER -