Typeset matrix in notebook

Question

How do you typeset a matrix like this in a notebook?

$$\begin{pmatrix} x|_1 & 1 & 0& 0&0\\ 1 & x^2|_1 & 0& 0&0\\ 0& 0&x|_2 & 1 &0\\ 0& 0&1 & x^2|_2 &0\\ 0& 0&0 & 0&\ddots\\ \end{pmatrix}$$

Also a column matrix with curly brackets?

Happy to be pointed to a duplicate (I searched but could not find one.) I would prefer not to have to use lots of box forms as here. I also note that we have no tag for typesetting. Thanks

Is it just for display purposes? Why not use MaTeX in this case? Or is this going to be used for actual mathematica code? — Nasser, Mar 06 '22 at 17:47
I only want it for display purposes. Further I sometimes want to copy such a form and then paste it into PowerPoint. This works if you copy as bitmap. — Hugh, Mar 06 '22 at 17:56

score 2 · Answer 1 · answered Mar 06 '22 at 18:15

I only want it for display purposes.

Well, in this case I would use MaTex

Mathematica graphics

Code:

  << MaTeX`
  SetOptions[MaTeX, "Preamble" -> {"\\usepackage{amsmath}"}]
mat = "\\begin{Bmatrix}
\\left.  x\\right\\vert _{1} & 1 & 0 & 0 & 0\\\\
1 & \\left.  x^{2}\\right\\vert _{1} & 0 & 0 & 0\\\\
0 & 0 & \\left.  x\\right\\vert _{2} & 0 & 0\\\\
0 & 0 & 1 & \\left.  x^{2}\\right\\vert _{2} & 0\\\\
0 & 0 & 0 & 0 & \\ddots
\\end{Bmatrix}
";
MaTeX[mat, Magnification -> 2]

For an extra credit, the above could be made into a function which accepts the matrix size and automatically generate the above for different size $n$

The above can be copied to another application. (right click on the image).

Looks like one way forward. How long does it take to learn MaTex? — Hugh, Mar 06 '22 at 18:46

score 2 · Answer 2 · answered Mar 06 '22 at 19:07

According to the link you give, your approach is to write :

RawBoxes[SubscriptBox[RowBox[{SuperscriptBox["x", "2"], "|"}], "1"]]

RawBoxes,SubscriptBox etc .. belong to low level "Box Language".
It is simpler to use the normal (high level) Language :

 Subscript[Row[{x^2, "|"}], "1"]

Typeset matrix in notebook

2 Answers2