arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1804.02129math.COcs.ITmath.IT
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长度为$24k+10$且重量为$4k+2$的单偶self-dual码

Singly even self-dual codes of length $24k+10$ and minimum weight $4k+2$

Masaaki Harada

摘要:

目前,对于所有非负整数$k$,长度为$24k+10$的极值单偶自对偶码的存在性是未知的。本文研究了单偶自对偶$[24k+10,12k+5,4k+2]$码。本文对单偶自对偶$[24k+10,12k+5,4k+2]$码的最小重量至少为$5$(对于$k=2,3,4,5$)的可能重量计数元给出了一些限制.讨论了一种构造具有最小阴影的单偶自对偶码的方法。作为例子,首次构造了具有最小阴影的单偶自对偶$[82,41,14]$码。此外,作为邻居的代码,我们构造单偶自对偶$[82,41,14]$码的重量枚举,没有单偶自对偶码是以前已知的存在。

英文摘要:

Currently, the existence of an extremal singly even self-dual code of length $24k+10$ is unknown for all nonnegative integers $k$. In this note, we study singly even self-dual $[24k+10,12k+5,4k+2]$ codes. We give some restrictions on the possible weight enumerators of singly even self-dual $[24k+10,12k+5,4k+2]$ codes with shadows of minimum weight at least $5$ for $k=2,3,4,5$. We discuss a method for constructing singly even self-dual codes with minimal shadow. As an example, a singly even self-dual $[82,41,14]$ code with minimal shadow is constructed for the first time. In addition, as neighbors of the code, we construct singly even self-dual $[82,41,14]$ codes with weight enumerator for which no singly even self-dual code was previously known to exist.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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