arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0604356math.COmath.NT
收藏

有限循环群中的长$n$ -无零序列

Long $n$-zero-free sequences in finite cyclic groups

Svetoslav Savchev, Fang Chen

摘要:

整数模$n$的加法群${\mathbb Z}_n$中的序列称为$n$ -无零,如果它不包含长度为$n$且和为零的连续序列。本文刻画了长度大于$3n/2-1$的${\mathbb Z}_n$中的$n$ -无零序列。这些序列的结构是完全确定的,这概括了一些以前已知的事实。表征不能以相同的形式扩展到更短的序列长度。的主要结果的后果是最好的可能的下界的最大多重性的一项在$n$ -零自由序列的任何给定的长度大于$3n/2-1$在${\mathbb Z}_n$,也为合并的多重性的两个最重复的条款。另一个应用是在与经典的埃尔德什、金兹伯格和齐夫定理有关的函数的一定范围内求值。

英文摘要:

A sequence in the additive group ${\mathbb Z}_n$ of integers modulo $n$ is called $n$-zero-free if it does not contain subsequences with length $n$ and sum zero. The article characterizes the $n$-zero-free sequences in ${\mathbb Z}_n$ of length greater than $3n/2-1$. The structure of these sequences is completely determined, which generalizes a number of previously known facts. The characterization cannot be extended in the same form to shorter sequence lengths. Consequences of the main result are best possible lower bounds for the maximum multiplicity of a term in an $n$-zero-free sequence of any given length greater than $3n/2-1$ in ${\mathbb Z}_n$, and also for the combined multiplicity of the two most repeated terms. Yet another application is finding the values in a certain range of a function related to the classic theorem of Erdős, Ginzburg and Ziv.

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。

↑