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默比乌斯函数

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默比乌斯函数缪比乌斯函数是指以下的函數:

无平方数因数,且
有大於的平方數因數

μ(n)的首25个值(OEIS數列A008683):

1, −1, −1, 0, −1, 1, −1, 0, 0, 1, −1, 0, −1, 1, 1, 0, −1, 0, −1, 0, 1, 1, −1, 0, 0, ...
μ的首50個值

默比乌斯函数是一個積性函數

其他狀況

狄利克雷卷積的方法表示,則是 ,其中是狄利克雷卷積的單位元,這是默比乌斯反转公式的原理。


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默比乌斯函数
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