DLMF:27.3.E8 (Q8009)

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DLMF:27.3.E8
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    Statements

    Defining formula
    ϕ ⁡ ( m ) ⁢ ϕ ⁡ ( n ) = ϕ ⁡ ( m ⁢ n ) ⁢ ϕ ⁡ ( ( m , n ) ) / ( m , n ) . Euler-totient-phi 𝑚 Euler-totient-phi 𝑛 Euler-totient-phi 𝑚 𝑛 Euler-totient-phi 𝑚 𝑛 𝑚 𝑛 {\displaystyle{\displaystyle\phi\left(m\right)\phi\left(n\right)=\phi\left(mn% \right)\phi\left(\left(m,n\right)\right)/\left(m,n\right).}}
    0 references
    DLMF id
    DLMF:27.3.E8
    0 references
    Symbols used
    Euler’s totient
    Defining formula
    ϕ ⁡ ( n ) Euler-totient-phi 𝑛 {\displaystyle{\displaystyle\phi\left(\NVar{n}\right)}}
    xml-id
    C27.S2.E7.m2aadec
    0 references
    Q12093
    Defining formula
    ( m , n ) 𝑚 𝑛 {\displaystyle{\displaystyle\left(\NVar{m},\NVar{n}\right)}}
    xml-id
    C27.S1.p2.t1.r3.m6abdec
    0 references
     
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