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arXiv 1409.0446math.NT
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复杂性:实验和分析结果II

Integer Complexity: Experimental and Analytical Results II

Juris Čerņenoks, Jānis Iraids, Mārtiņš Opmanis, Rihards Opmanis, Kārlis Podnieks

摘要:

我们考虑用1、加法、乘法和括号来表示自然数。$\left\| n \right\|$表示表示$n$的表达式中1的最小数目。对数复杂度$\left\| n \right\|_{\log}$定义为$\left\| n \right\|/{\log_3 n}$。$\left\| n \right\|_{\log}$的值位于片段$[3, 4.755]$中,但几乎不知道关于该“谱”的结构的确定性(值是否密集在片段中的某处等)。我们建立了一个连接这个问题和另一个困难的问题:看似“几乎随机”的行为的数字在基地3表示的数字$2^n$。我们还考虑表示自然数的表达式,包括减法,和所谓的$P$ -算法-一个家庭的“确定性”的算法,用于建立表示的数字。

英文摘要:

We consider representing of natural numbers by expressions using 1's, addition, multiplication and parentheses. $\left\| n \right\|$ denotes the minimum number of 1's in the expressions representing $n$. The logarithmic complexity $\left\| n \right\|_{\log}$ is defined as $\left\| n \right\|/{\log_3 n}$. The values of $\left\| n \right\|_{\log}$ are located in the segment $[3, 4.755]$, but almost nothing is known with certainty about the structure of this "spectrum" (are the values dense somewhere in the segment etc.). We establish a connection between this problem and another difficult problem: the seemingly "almost random" behaviour of digits in the base 3 representations of the numbers $2^n$. We consider also representing of natural numbers by expressions that include subtraction, and the so-called $P$-algorithms - a family of "deterministic" algorithms for building representations of numbers.

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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