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arXiv 2304.07906math.COcs.ITmath.IT
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Sidon集、和自由集与线性码

Sidon sets, sum-free sets and linear codes

Otto von Guericke University Magdeburg(奥托·冯·格里克马格德堡大学)

Ingo Czerwinski, Alexander Pott

AI总结:

本文通过线性码与Sidon集的对应关系,改进了Sidon集最大大小的上界,并characterise了最大Sidon集的性质。

摘要:

在$\mathbb{F}_2^t$中寻找最大Sidon集的大小问题已有超过40年的研究兴趣。为解决此问题,我们回顾了和自由Sidon集与最小距离大于等于5的线性码之间的一一对应关系。我们的主要贡献是关于码的一个新的不存在结果,基于对Johnson界的一种加强。这在Sidon集方面改进了最大大小的通用上界。此外,我们characterise了最大Sidon集,即那些无法通过添加元素而不失去Sidon性质的Sidon集,直到维度6,并通过计算机计算确定了维度7和8的所有可能大小。

英文摘要:

Finding the maximum size of a Sidon set in $\mathbb{F}_2^t$ is of research interest for more than 40 years. In order to tackle this problem we recall a one-to-one correspondence between sum-free Sidon sets and linear codes with minimum distance greater or equal 5. Our main contribution about codes is a new non-existence result for linear codes with minimum distance 5 based on a sharpening of the Johnson bound. This gives, on the Sidon set side, an improvement of the general upper bound for the maximum size of a Sidon set. Additionally, we characterise maximal Sidon sets, that are those Sidon sets which can not be extended by adding elements without loosing the Sidon property, up to dimension 6 and give all possible sizes for dimension 7 and 8 determined by computer calculations.

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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