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arXiv 1706.02207cs.CCmath.CO
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关于高维置换的通信复杂性

On The Communication Complexity of High-Dimensional Permutations

Nati Linial, and Toniann Pitassi, Adi Shraibman

摘要:

在额上数(NOF)模型下,研究了高维排列的多方通信复杂性。这个模型是由于钱德拉,弗斯特和利普顿(CFL)谁也给了一个非平凡的协议的确切n问题,其中三个球员收到整数输入,并需要决定如果他们的输入总和为一个给定的整数$n$。有相当多的文献处理同样的问题,其中$(\mathbb{N},+)$被其他阿贝尔群所取代。我们的工作可以被视为这一工作线的深远延伸。我们表明,已知的下界,群论问题适用于所有的高维排列。我们引入新的证明技术,呼吁添加剂组合数学和拉姆齐理论的最新进展。我们揭示了新的和意想不到的连接之间的NOF的通信复杂性的高维排列和各种众所周知的和彻底研究的组合问题。以前的Exactly-n协议都依赖于构建大型整数集,而没有3项算术级数。没有直接的算法协议是以前已知的问题,我们提供了第一个这样的算法。这提出了新的方法来显着改善CFL协议。许多新的开放性问题贯穿始终。

英文摘要:

We study the multiparty communication complexity of high dimensional permutations, in the Number On the Forehead (NOF) model. This model is due to Chandra, Furst and Lipton (CFL) who also gave a nontrivial protocol for the Exactly-n problem where three players receive integer inputs and need to decide if their inputs sum to a given integer $n$. There is a considerable body of literature dealing with the same problem, where $(\mathbb{N},+)$ is replaced by some other abelian group. Our work can be viewed as a far-reaching extension of this line of work. We show that the known lower bounds for that group-theoretic problem apply to all high dimensional permutations. We introduce new proof techniques that appeal to recent advances in Additive Combinatorics and Ramsey theory. We reveal new and unexpected connections between the NOF communication complexity of high dimensional permutations and a variety of well known and thoroughly studied problems in combinatorics. Previous protocols for Exactly-n all rely on the construction of large sets of integers without a 3-term arithmetic progression. No direct algorithmic protocol was previously known for the problem, and we provide the first such algorithm. This suggests new ways to significantly improve the CFL protocol. Many new open questions are presented throughout.

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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