[-- Attachment #1.1: Type: text/plain, Size: 1221 bytes --] I want to use a matrix environment that is included in an outer environment, so: ``` Environment: \begin{equation*} \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| \end{equation*} Display--math: \[ \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| \] Inline--math: \( \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| \) ``` But for the second and third cases (display-math and inline-math) the preview and export to latex are failed: exported LaTeX: ``` Environment: \begin{equation*} \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| \end{equation*} Display--math: $\backslash$[ \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| $\backslash$] Inline--math: $\backslash$( \left| \begin{matrix} a_1 & b_1\\ a_2 & b_2 \end{matrix} \right| $\backslash$) \end{document} ``` org-mode preview: [image: preview.png] Emacs : GNU Emacs 26.3 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.14) of 2020-03-26, modified by Debian Package: Org mode version 9.3.8 (9.3.8-1-g13dfab-elpaplus @ /home/sd/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200914/) It is reproduces with Org mode 9.4 also https://emacs.stackexchange.com/q/60765/13323 [-- Attachment #1.2: Type: text/html, Size: 1726 bytes --] [-- Attachment #2: preview.png --] [-- Type: image/png, Size: 10640 bytes --]
Hello,
Сергей Олегович <sdorof1@gmail.com> writes:
> I want to use a matrix environment that is included in an outer
> environment, so:
>
> ```
> Environment:
> \begin{equation*}
> \left|
> \begin{matrix}
> a_1 & b_1\\
> a_2 & b_2
> \end{matrix}
> \right|
> \end{equation*}
>
> Display--math:
> \[
> \left|
> \begin{matrix}
> a_1 & b_1\\
> a_2 & b_2
> \end{matrix}
> \right|
> \]
>
> Inline--math:
> \(
> \left|
> \begin{matrix}
> a_1 & b_1\\
> a_2 & b_2
> \end{matrix}
> \right|
> \)
> ```
>
> But for the second and third cases (display-math and inline-math) the
> preview and export to latex are failed:
This is not a bug. \[...\] and \(...\) are inline elements within
a paragraph. However, \begin{...}...\end{...} environments are blocks,
and they break paragraphs. IOW, you cannot nest them.
The following should work however
\(
\left|\begin{matrix}
a_1 & b_1\\
a_2 & b_2
\end{matrix}\right|
\)
because \begin{matrix} doesn't start the line, and therefore is not seen
as starting a new LaTeX block.
As a rule of thumb, Org has limited support for raw LaTeX in a document.
This is not AucTeX. For specific needs, you may want to use LaTeX
blocks, i.e., #+begin_export latex...
Regards,
--
Nicolas Goaziou