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New extremal self-dual codes of length 68

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2 Author(s)
S. T. Dougherty ; Dept. of Math., Scranton Univ., PA, USA ; M. Harada

We give two computational results on binary self-dual codes. A number of extremal singly-even self-dual [68, 34, 12] codes with weight enumerators not known to exist, are constructed. For k⩽10, the relationship between extremal doubly-even self-dual codes of length 24 k, and certain singly-even self-dual codes of length 24 k-2 is presented

Published in:

IEEE Transactions on Information Theory  (Volume:45 ,  Issue: 6 )