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arXiv 1908.10843cs.FLmath.LO
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自动复杂性的不可压缩性定理

An incompressibility theorem for automatic complexity

Bjørn Kjos-Hanssen

摘要:

Shallit和Wang证明了自动复杂度$A(x)$对于几乎所有的$x\in{\{\mathtt{0},\mathtt{1}\}}^n$都满足$A(x)\ge n/13$。他们还说,霍尔格·彼得森告诉他们,常数13可以减少到7。在这里,我们表明,它可以减少到$2+ε$的任何$ε>0$。该结果也适用于非确定性自动复杂性$A_N(x)$。在该设置中,由于所有$x$的$A_N(x)\le n/2+1$,结果是紧密的。

英文摘要:

Shallit and Wang showed that the automatic complexity $A(x)$ satisfies $A(x)\ge n/13$ for almost all $x\in{\{\mathtt{0},\mathtt{1}\}}^n$. They also stated that Holger Petersen had informed them that the constant 13 can be reduced to 7. Here we show that it can be reduced to $2+ε$ for any $ε>0$. The result also applies to nondeterministic automatic complexity $A_N(x)$. In that setting the result is tight inasmuch as $A_N(x)\le n/2+1$ for all $x$.

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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