DLMF:27.3.E3 (Q8004)

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DLMF:27.3.E3
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    Statements

    test
    ϕ ⁡ ( n ) = n ⁢ ∏ p | n ( 1 - p - 1 ) , Euler-totient-phi 𝑛 𝑛 subscript product divides 𝑝 𝑛 1 superscript 𝑝 1 {\displaystyle{\displaystyle\phi\left(n\right)=n\prod_{p\mathbin{|}n}(1-p^{-1}% ),}}
    0 references
    DLMF id
    DLMF:27.3.E3
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    Symbols used
    Euler’s totient
    test
    ϕ ⁡ ( n ) Euler-totient-phi 𝑛 {\displaystyle{\displaystyle\phi\left(\NVar{n}\right)}}
    xml-id
    C27.S2.E7.m2adec
    0 references
    Q12234
    test
    n 𝑛 {\displaystyle{\displaystyle n}}
    xml-id
    C27.S1.XMD4.m1bdec
    0 references
     
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