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An application of coding theory to estimating Davenport constants

机译:编码理论在估计Davenport常数中的应用

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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 Abe-lian group (G, +, 0), the invariant D-j (G) is defined as the smallest e such that each sequence over G of length at least t 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.
机译:我们研究了Davenport常数的某种公认的概括。对于ja个正整数(情况j = 1,是经典的)和一个有限的阿贝联群(G,+,0),不变Dj(G)被定义为最小e,使得G上每个序列至少t的长度具有j个不相交的非空零和子序列。我们调查了大等级(相对于j)的基本2组的这些数量。使用编码理论中的工具,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为某些群体的经典Davenport常数提供了改进的边界。

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