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How to typeset vector like this in latex

enter image description here

I came across an article

How do I typeset vertical and horizontal lines inside a matrix?

which mentions below code

\[
U = 
\left[
  \begin{array}{cccc}
    \vertbar & \vertbar & & \vertbar \\
    u^{(1)} & u^{(2)} & \ldots & u^{(n)} \\
    \vertbar & \vertbar & & \vertbar 
  \end{array}
\right]
\]

and generates equation like this

enter image description here

I have trouble putting right part in the equation, How can I do it.

  • 4
    Member for more than 2 years without a MWE? What have you tried so far? – CarLaTeX Aug 22 '17 at 4:21
  • 5
    You could add a simple matrix with the u's, we'll add the rules. Helping is fun but re-typing all is boring! – CarLaTeX Aug 22 '17 at 4:34
  • 2
    Of course, but why should I do it? Please, help us to help you. As is, your question shows no effort by you, it's a just-do-it-for-me one. – CarLaTeX Aug 22 '17 at 5:48
  • 1
    I do not understand where your problem is. If you add \in \mathbb R^{n \times n} after \right], the result should be the desired one. – epR8GaYuh Aug 22 '17 at 7:23
  • 1
    Much better: as you can see, you've already got an answer this way. Next time remember to add a complete MWE, your code snippet isn't compilable (even if the complete one can be copied from the link). – CarLaTeX Aug 22 '17 at 7:26
6

I would prefer to use bmatrix from amsmath. The R can be done using \mathbb from amssymb (or amsfonts).

\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\begin{document}
\[
  U = 
  \begin{bmatrix}
    \vert & \vert & & \vert\\
    u^{(1)} & u^{(2)} & \ldots & u^{(n)} \\
    \vert & \vert & & \vert    
  \end{bmatrix}
  \in\mathbb{R}^{n\times n}
\]
\end{document}

enter image description here

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