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arXiv 1007.0259math.NTmath.CO
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编码理论在Davenport常数估计中的应用

An application of coding theory to estimating Davenport constants

Alain Plagne, Wolfgang A. Schmid

摘要:

我们研究了达文波特常数的一个公认的推广。对于正整数$j$(情形$j=1$是经典的)和有限阿贝尔群$(G,+,0)$,不变式$\Dav_j(G)$被定义为最小的$\ell$,使得$G$上长度至少为$\ell$的每个序列具有$j$不相交的非空零和序列.我们调查这些数量的基本$2$ -组的大秩(相对于$j$)。使用编码理论的工具,我们对这些数量给出了相当精确的估计。我们使用我们的结果,以改善某些群体的经典达文波特常数的界限。

英文摘要:

We investigate a certain well-established generalization of the Davenport constant. For $j$ a positive integer (the case $j=1$, is the classical one) and a finite Abelian group $(G,+,0)$, the invariant $\Dav_j(G)$ is defined as the smallest $\ell$ such that each sequence over $G$ of length at least $\ell$ has $j$ disjoint non-empty zero-sum subsequences. We investigate these quantities for elementary $2$-groups of large rank (relative to $j$). Using tools from coding theory, we give fairly precise estimates for these quantities. We use our results to give improved bounds for the classical Davenport constant of certain groups.

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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