Ternary extremal four-negacirculant self-dual codes

06/18/2023

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by   Masaaki Harada, et al.

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In this note, we give basic properties of ternary four-negacirculant self-dual codes. By exhaustive computer search based on the properties, we complete a classification of ternary extremal four-negacirculant self-dual codes of lengths 40, 44, 48, 52 and 60.