It is `amsmath' , not `amslatex' .
Org include amsmath defaultly .
Org-mode will handle these environments, but you must require the package in the header:
On Aug 11, 2009, at 10:37 AM, waterloo wrote:
org-mode can not precess some LATEX environment .
Such as :
\begin{matrix}
\end{matrix}
which is in amslatex.
#+LaTeX_HEADER: \usepackage{amslatex}
Or add to org-export-latex-package-alist
- Carsten