arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv cs/0501026cs.CC
收藏

关于循环不变布尔函数的灵敏度

On the Sensitivity of Cyclically-Invariant Boolean Functions

Sourav Chakraborty

摘要:

本文构造了一个灵敏度为$Θ(n^{1/3})$的循环不变布尔函数。这一结果回答了先前发表的两个问题。Turán(1984)提出了一个问题:是否任何布尔函数,在某些可迁置换群下不变,具有灵敏度$Ω(\sqrt{n})$。Kenyon和Kendall(2004)提出了一个问题:对于一个“好”函数,0-灵敏度和1-灵敏度的乘积是否是$Ω(n)$。我们的函数对这两个问题的回答都是否定的。我们还证明了对于最小项传递函数(布尔函数的自然类,包括我们的例子)的灵敏度是$Ω(n^{1/3})$。因此,对于这类函数,灵敏度和块灵敏度是多项式相关的。

英文摘要:

In this paper we construct a cyclically invariant Boolean function whose sensitivity is $Θ(n^{1/3})$. This result answers two previously published questions. Turán (1984) asked if any Boolean function, invariant under some transitive group of permutations, has sensitivity $Ω(\sqrt{n})$. Kenyon and Kutin (2004) asked whether for a ``nice'' function the product of 0-sensitivity and 1-sensitivity is $Ω(n)$. Our function answers both questions in the negative. We also prove that for minterm-transitive functions (a natural class of Boolean functions including our example) the sensitivity is $Ω(n^{1/3})$. Hence for this class of functions sensitivity and block sensitivity are polynomially related.

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。

↑