重庆科技学院学报：自然科学版
重慶科技學院學報：自然科學版
중경과기학원학보：자연과학판
Journal of Chongqing University of Science and Technology:Natural Science Edition
2012年
4期
177-178,186
,共3页
黑洞数%数码方和%迭代%不动点%周期点%自然数
黑洞數%數碼方和%迭代%不動點%週期點%自然數
흑동수%수마방화%질대%불동점%주기점%자연수
black-hole numbers%sum of digital power%iteration%fixed points%periodic points%natural number
数码4次方求和迭代有且仅有4个不动点,一对2周期点和7个7周期点。自然数经过若干次数码4次方求和迭代进入各个不动点或周期点的概率并不均衡的,其中绝大多数进入7周期点。
數碼4次方求和迭代有且僅有4箇不動點,一對2週期點和7箇7週期點。自然數經過若榦次數碼4次方求和迭代進入各箇不動點或週期點的概率併不均衡的,其中絕大多數進入7週期點。
수마4차방구화질대유차부유4개불동점,일대2주기점화7개7주기점。자연수경과약간차수마4차방구화질대진입각개불동점혹주기점적개솔병불균형적,기중절대다수진입7주기점。
There are only four fixed, a pair of 2- period and seven 7- period points in the iteration of sum iteration of the fourth power of each digit of natural number. Through several sum iteration of the fourth power of digital number, probabilities of every fixed or periodic points are unbalanced, where most of the numbers enter 7-period points.
