DLMF:3.11.E34 (Q1482)

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DLMF:3.11.E34
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    Statements

    test
    X k ⁢ ℓ = ∑ j = 1 J w ⁢ ( x j ) ⁢ ϕ k ⁢ ( x j ) ⁢ ϕ ℓ ⁢ ( x j ) , subscript 𝑋 𝑘 ℓ superscript subscript 𝑗 1 𝐽 𝑤 subscript 𝑥 𝑗 subscript italic-ϕ 𝑘 subscript 𝑥 𝑗 subscript italic-ϕ ℓ subscript 𝑥 𝑗 {\displaystyle{\displaystyle X_{k\ell}=\sum_{j=1}^{J}w(x_{j})\phi_{k}(x_{j})% \phi_{\ell}(x_{j}),}}
    0 references
    DLMF id
    DLMF:3.11.E34
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    comment
    Warning: Falling back to standard tex;
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    Symbols used
    Q11211
    test
    J > n + 1 𝐽 𝑛 1 {\displaystyle{\displaystyle J>n+1}}
    xml-id
    C3.S11.XMD15.m1cdec
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    Q11212
    test
    X k subscript 𝑋 𝑘 {\displaystyle{\displaystyle X_{k}}}
    xml-id
    C3.S11.XMD16.m1cdec
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    Q11215
    test
    ϕ k ⁢ ( x ) subscript italic-ϕ 𝑘 𝑥 {\displaystyle{\displaystyle\phi_{k}(x)}}
    xml-id
    C3.S11.XMD19.m1adec
    0 references
    Q11216
    test
    w ⁢ ( x ) 𝑤 𝑥 {\displaystyle{\displaystyle w(x)}}
    xml-id
    C3.S11.XMD20.m1adec
    0 references
     
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