From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rasmus <rasmus@gmx.us>
Subject: Re: Bug: Usage of pmatrix yields error message dispite lack of error
 [9.1.9 (9.1.9-3-gb1a639-elpa @ /home/christoph/.emacs.d/elpa/org-20180402/)]
Date: Wed, 11 Apr 2018 00:03:00 +0200
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> Org-mode seems to support environment-based math formulas. However, when
> using pmatrix, the buffer *Org PDF LaTeX Output* always shows an
> error when exporting to PDF via LaTeX. This even happens for the
> simplest of matrices:
>
> \begin{pmatrix}
> 0
> \end{pmatrix}
>
> An org file with only these 3 lines of content is sufficient for
> reproducing the bug. Upon typing "C-c C-e l p", the error message "PDF
> file produced with errors." is shown in the mini buffer. The buffer *Org
> PDF LaTeX Output* shows this error message:
>
> ! Missing $ inserted.
> <inserted text> 
>                 $
> l.31 \begin{pmatrix}
>                     
> (/usr/share/texlive/texmf-dist/tex/latex/amsfonts/umsa.fd)
> (/usr/share/texlive/texmf-dist/tex/latex/amsfonts/umsb.fd)
> ! Missing $ inserted.
> <inserted text> 
>                 $
> l.33 \end{pmatrix}

In your example they are missing.  You could write

\(\begin{pmatrix}
0
\end{pmatrix}
\)


Or

#+ATTR_LATEX: :mode math :environment pmatrix
| 0 | 

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