DLMF:1.9.E15 (Q259)

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DLMF:1.9.E15
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    Statements

    DLMF defining formula
    z 1 ⁢ z 2 = x 1 ⁢ x 2 - y 1 ⁢ y 2 + i ⁢ ( x 1 ⁢ y 2 + x 2 ⁢ y 1 ) , subscript 𝑧 1 subscript 𝑧 2 subscript 𝑥 1 subscript 𝑥 2 subscript 𝑦 1 subscript 𝑦 2 𝑖 subscript 𝑥 1 subscript 𝑦 2 subscript 𝑥 2 subscript 𝑦 1 {\displaystyle{\displaystyle z_{1}z_{2}=x_{1}x_{2}-y_{1}y_{2}+i(x_{1}y_{2}+x_{% 2}y_{1}),}}
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    comment
    Warning: Falling back to standard tex;
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    Symbols used
    imaginary unit
    DLMF defining formula
    i imaginary-unit {\displaystyle{\displaystyle\mathrm{i}}}
    xml-id
    C1.S9.E1.m2aedec
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    variable
    DLMF defining formula
    z 𝑧 {\displaystyle{\displaystyle z}}
    xml-id
    C1.S1.XMD1.m1idec
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    Identifiers

     
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