Note on normal numbers

Note on normal numbers
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正常数字的注意事项

DOI:
10.1090/s0002-9904-1946-08657-7
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发表时间:
1946
影响因子:
1.3
通讯作者:
P. Erdös
P. Erdös
中科院分区:
数学1区
文献类型:
--
作者:
A. Copeland;P. Erdös

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相对于以10为底是正规的(在波莱尔意义上),一个正规数是其数字呈现完全随机性的数。更精确地说,如果一个数满足数字0、1、2、······、9中的每一个出现的极限相对频率为1/10,并且k位数字的10^k个序列中的每一个出现的频率为10^(-k),那么这个数就是正规的。钱珀瑙恩猜想,如果所有整数的序列被素数序列所取代,那么相应的十进制数······
was normal (in the sense of Borel) with respect to the base 10, a normal number being one whose digits exhibit a complete randomness. More precisely a number is normal provided each of the digits 0, 1, 2, • • • , 9 occurs with a limiting relative frequency of 1/10 and each of the 10* sequences of k digits occurs with the frequency 10"""*. Champernowne conjectured that if the sequence of all integers were replaced by the sequence of primes then the corresponding decimal