#+OPTIONS: latex:t
Le jeu.  09 janv. 2014  à 11:49:14 ,  Bastien <bzg@gnu.org> a  envoyé ce
message:
> Hi Joseph,
>
> Joseph Vidal-Rosset <joseph.vidal.rosset@gmail.com> writes:
>
>> I wonder how it is possible to get png images in Gnus for everything
>> that is created by latex, as it is possible already to get it for
>> html
>> via org export.
>
> One indirect way is to run M-x org-preview-latex-fragment RET in a
> buffer containing the equations, then inlining[fn:1] the .png files from
> the ltxpng/ directory.
>
> I can't think of something more direct right now.

I try: 


\begin{equation}
\neg \neg A \vdash_{m} A
\end{equation}


It seems  that it will  work for the equation  package, but it  does not
work with  for example  other packages: the  prooftree command  given by
bussproofs package does not work,

\begin{prooftree}
\AxiomC{$A$}
\AxiomC{$A \to \bot$}
\RightLabel{\scriptsize{$\to E$}}
\BinaryInfC{$\bot$}
\end{prooftree}


neither fitch proofs: 

\begin{equation*}
\begin{fitch}
\fh A & H \\
\fa \fh \bot & H \\
\fa A \to \bot 
\end{fitch}
\end{equation*}




>
>> It could be very nice for the scientific community to get such a tool
>> thanks to Gnus + Org.
>
> By reading Cedric Villani last book, I was under the impression
> that the whole scientific community was able to read TeX equations
> directly, with no need of visual feedback ;)  But agreed, this
> would be nice.

The scientific community  can live without this tool, of  course, but it
would be nice if Org + Gnus  could be the email client par excellence of
this community. I am happy to see that you agree. 

Best wishes,

Jo. 

[fn:1] I guess  that  by "inlining"  you mean  making  the command  M-x
org-mime-htmlize  . But  I am  not sur  that is  what you  meant. It  is
nevertheless already  a great pleasure of  making Org working in  Gnus !
What a terrific tool !