arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.07698math.PRmath.NTstat.OT
收藏

在2.43个骰子中击中一个质数(平均)

Hitting a prime in 2.43 dice rolls (on average)

Noga Alon, Yaakov Malinovsky

摘要:

6面骰子的掷数是多少,直到所有掷数的总和第一次是素数?我们计算这个随机变量的期望和方差,直到加性误差小于10^{-4}。这是DasGupta(2017)在《数理统计研究所公报》中提出的一个难题的解决方案,其中公布的解决方案是不完整的。证明很简单,结合了基本的动态规划算法和快速的Matlab计算以及关于素数素数分布的基本事实。

英文摘要:

What is the number of rolls of fair 6-sided dice until the first time the total sum of all rolls is a prime? We compute the expectation and the variance of this random variable up to an additive error of less than 10^{-4}. This is a solution to a puzzle suggested by DasGupta (2017) in the Bulletin of the Institute of Mathematical Statistics, where the published solution is incomplete. The proof is simple, combining a basic dynamic programming algorithm with a quick Matlab computation and basic facts about the distribution of primes.

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。

↑