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arXiv 0903.3458math.NTmath.COmath.GR
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不同长度零和子序列的存在性

On the existence of zero-sum subsequences of distinct lengths

Benjamin Girard

摘要:

本文给出了有限Abel p-群上短正规序列的一个刻划,从而肯定地回答了Gao关于这类群的一个猜想。本文的主要结果是由Alon,Friedland和Kalai的一个定理导出的,这个定理最初是为了研究几乎正则图中正则子图的存在性而证明的。在初等p-群的特殊情况下,利用Alon的组合零元定理解决了Gao的猜想。最后,我们表明,假设每个整数满足性质B,这个猜想的情况下,有限的阿贝尔群的秩为2。

英文摘要:

In this paper, we obtain a characterization of short normal sequences over a finite Abelian p-group, thus answering positively a conjecture of Gao for a variety of such groups. Our main result is deduced from a theorem of Alon, Friedland and Kalai, originally proved so as to study the existence of regular subgraphs in almost regular graphs. In the special case of elementary p-groups, Gao's conjecture is solved using Alon's Combinatorial Nullstellensatz. To conclude, we show that, assuming every integer satisfies Property B, this conjecture holds in the case of finite Abelian groups of rank two.

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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