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Aligning matrices both vertically and horizontally in LaTeX

I am trying to accomplish this in LaTeX:

āŽ”aāŽ¤ āŽ”b ā€¦  nāŽ¤
āŽ¢āžāŽ¢ āŽ¢āž ā‹± āžāŽ¢
āŽ£xāŽ¦ āŽ£y ā€¦  zāŽ¦

      [a  ā€¦ x]

I can get the vector + matrix on the same line, but I'm not sure how to align the vector below so that it fits perfectly under the large matrix.

Here's a textual representation of the less Unicode "drawing" above:

[a] [ b c ]
[d] [ e f ]
    [ g h ]

Note that the last row ([gh]) is a one-row matrix separated from the 2x2 matrix above it.

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3 answers


\ edit2
final answer: 

\begin{align*}
        \begin{vmatrix} 1 \\ 2 \end{vmatrix} &\begin{vmatrix} 1 & 2 & 3 \\ 3 & 4 & 5 \end{vmatrix} \\[6px]
        &\begin{vmatrix} 2 & 3 & 4 \end{vmatrix} 
\end{align*}

does exactly what you want, read below to learn more about placement, etc. The "&" sign is used for general alignment. The first line had 2 matrices, but now you have :).

distance information, etc.
  \ {Start alignment *} & \ begin {pmatrix} 1 and 2 and 3 \ 3 and 4 and 5 \ end {pmatrix} \ [6px] & \ hspace {2px} \ begin {pmatrix} 2 and 3 and 4 \ end {pmatrix} \ End {align *}



will do the job. For some strange reason, the alignment was causing errors when leaving the first "&" character, and it gave an offset of 2px. I figured you need some space in between if you don't leave [6px]. You can always use \ hspace {number of spaces} to place the second matrix where you want it. This can be given in pt, px (which I did), etc.

// edit
Hm I noticed that \ hspace {} is not really needed, but can be used in the case of pmatrix . What happens is that the pmatrix brackets give an offset image of the matrices. When using vmatrix , for example:

\begin{align*}
        &\begin{vmatrix} 1 & 2 & 3 \\ 3 & 4 & 5 \end{vmatrix} \\[6px]
        &\begin{vmatrix} 2 & 3 & 4 \end{vmatrix} 
\end{align*}

Everything goes well:). So basically, perhaps the easiest way to fix this is either to use other brackets to make it look good, or to use \ hspace to align it as you see fit.

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If all else fails, PGF / TikZ can do it. See this example .



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Wrap the thing in \begin{align*} ... \end{align*}

and use it &

as an alignment marker in your formulas.

Example:




    \begin{align*}
        \begin{pmatrix} ... vector here \end{pmatrix}
        &\begin{pmatrix} ... first matrix here \end{pmatrix}\\
        &\begin{pmatrix} ... second matrix here \end{pmatrix}
    \end{align*}


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