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Display information for equation id:math.286743.26 on revision:286743

* Page found: Talk:Covariance matrix (eq math.286743.26)

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Hash: 78bac190264feda95bc65b5f9578e60b

TeX (original user input):

\Sigma_{ij} = \sum_{\mathbf{v}\in V} v_i v_j

TeX (checked):

\Sigma _{ij}=\sum _{\mathbf {v} \in V}v_{i}v_{j}

LaTeXML (experimental; uses MathML) rendering

MathML (4.429 KB / 923 B) :

Σ i j = 𝐯 V v i v j subscript Σ 𝑖 𝑗 subscript 𝐯 𝑉 subscript 𝑣 𝑖 subscript 𝑣 𝑗 {\displaystyle{\displaystyle\Sigma_{ij}=\sum_{\mathbf{v}\in V}v_{i}v_{j}}}
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SVG (7.093 KB / 2.748 KB) :

normal upper Sigma Subscript i times j Baseline equals sigma-summation Underscript bold v element-of upper V Endscripts v Subscript i Baseline times v Subscript j

MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools) rendering

MathML (0 B / 8 B) :

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Translations to Computer Algebra Systems

Translation to Maple

In Maple: Sigma[i*j]= sum(v[i]*v[j], v in V)

Information about the conversion process:

i: You use a typical letter for a constant [the imaginary unit == the principal square root of -1].

We keep it like it is! But you should know that Maple uses I for this constant.

If you want to translate it as a constant, use the corresponding DLMF macro \iunit



Translation to Mathematica

In Mathematica: Subscript[\[CapitalSigma], i*j]= Sum[Subscript[v, i]*Subscript[v, j], {v, V}]

Information about the conversion process:

i: You use a typical letter for a constant [the imaginary unit == the principal square root of -1].

We keep it like it is! But you should know that Mathematica uses I for this constant.

If you want to translate it as a constant, use the corresponding DLMF macro \iunit



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