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New doubly even self-dual codes having minimum weight 20
Published 23 Feb 2019 in math.CO, cs.IT, and math.IT | (1902.08739v1)
Abstract: 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 $112$.
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