From mboxrd@z Thu Jan  1 00:00:00 1970
From: tsd@tsdye.com (Thomas S. Dye)
Subject: Re: latex equation and html export
Date: Mon, 30 Dec 2013 06:25:15 -1000
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In-Reply-To: <CAD-VTcHpSOand4hHk2a=t981mXgqRF2qdR7WetYK5FimmcesbQ@mail.gmail.com>
	(Joseph Vidal-Rosset's message of "Mon, 30 Dec 2013 13:52:36 +0100")
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To: Joseph Vidal-Rosset <joseph.vidal.rosset@gmail.com>
Cc: emacs-orgmode list <emacs-orgmode@gnu.org>

Aloha Joseph,

Joseph Vidal-Rosset <joseph.vidal.rosset@gmail.com> writes:

> With numbered equation, I do not succeed to get a code working both for
> LateX export AND html export .
>
> For example this code:
>
> #+BEGIN_LaTeX
> \begin{equation}
> \label{eq:2}
> A \to \neg B
> \end{equation}
> #+END_LaTeX
>
> works fine in org-mode : latex syntax is highleted and the export to pdf
> works. But it does not work with html export: the formula does not appear.
>

Your code is targeted to the LaTeX back-end and should be ignored by
other back-ends (as you've discovered).

Something like this might do what you want:

#+NAME: eq:2
#+BEGIN_EQUATION
A \to \neg B
#+END_EQUATION

See Section 11.8 of the manual, Special Blocks.

hth,
Tom
-- 
Thomas S. Dye
http://www.tsdye.com