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arXiv 2406.12450cs.ITmath.COmath.IT
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论完美对称秩距离码

On perfect symmetric rank-metric codes

Usman Mushrraf, Ferdinando Zullo

AI总结:

本文研究对称秩距离码的覆盖性质,刻画了在类似球填充界中取等号的完美码及若干拟完美码族,并证明存在非平凡完美码。

摘要:

令 Sym_q(m) 为 F_q^(m×m) 中对称矩阵构成的空间。赋予秩距离的 Sym_q(m) 子空间称为对称秩距离码。本文研究对称秩距离码的覆盖性质。首先,我们刻画了完美的对称秩距离码,即在类似球填充界中取等号的码。我们表明,与秩距离情形不同,存在非平凡的完美码。此外,我们还刻画了几类拟完美码族。

英文摘要:

Let $\mathrm{Sym}_q(m)$ be the space of symmetric matrices in $\mathbb{F}_q^{m\times m}$. A subspace of $\mathrm{Sym}_q(m)$ equipped with the rank distance is called a symmetric rank-metric code. In this paper we study the covering properties of symmetric rank-metric codes. First we characterize symmetric rank-metric codes which are perfect, i.e. that satisfy the equality in the sphere-packing like bound. We show that, despite the rank-metric case, there are non trivial perfect codes. Also, we characterize families of codes which are quasi-perfect.

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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