On 3/07/19 6:00 PM, Atsuhito Kohda wrote:
> I've used LaTeX quite a long time but recently I begin to use ConTeXt too.
> So I'm very sorry if the following is well-known issue.
>
> I find an example of \pmatrix in p.21 of "ConTeXt Mark IV an excursion"
> (ma-cb-en.pdf). And I notice it is defined in
> /usr/share/texmf/tex/context/base/mkiv/math-pln.mkiv (in Debian).
> But it seems \bmatrix, \vmatrix are not defined yet.
> Is there any reason why they are not defined?
> Similar commands or environments \begin{bmatrix}...\end{bmatrix},
> \begin{vmatrix}...\end{vmatrix} are very often used in mathematical
> LaTeX documents.
> It is very useful if we can use \bmatrix and \vmatrix in ConTeXt
> documents, so please add
> \unexpanded\def\bmatrix#1%
> {\left[\matrix{#1}\right]}
> \unexpanded\def\vmatrix#1%
> {\left|\matrix{#1}\right|}
> in math-pln.mkiv or somewhere.
\definemathmatrix
[pmatrix]
[left={\left(},right={\right)}]
\definemathmatrix
[bmatrix]
[left={\left[},right={\right]}]
\definemathmatrix
[vmatrix]
[left={\left\lvert},right={\right\rvert}]
\definemathmatrix
[Vmatrix]
[left={\left\lVert},right={\right\rVert}]
\starttext
\startformula
\startpmatrix
\NC A \NC B \NR
\NC C \NC D \NR
\stoppmatrix
\quad
\startbmatrix
\NC A \NC B \NR
\NC C \NC D \NR
\stopbmatrix
\quad
\startvmatrix
\NC A \NC B \NR
\NC C \NC D \NR
\stopvmatrix
\quad
\startVmatrix
\NC A \NC B \NR
\NC C \NC D \NR
\stopVmatrix
\stopformula
\stoptext
>
> By the way, I think it is critical to set
> \setupmathematics[ampersand=normal]
This should not be necessary in general. Just use \NC and \NR.
> to use \matrix above but I can't find this setting in ma-cb-en.pdf
> It is great if this is added in ma-cb-en.pdf
>
>
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