2014-06-27 12:58 GMT+02:00 Joseph Vidal-Rosset <
joseph.vidal.rosset@gmail.com>:

> http://orgmode.org/worg/org-tutorials/org-jsmath.html
>
> Hello the list,
>
> I have followed this tutorial, but unfortunately, I do not understand why
> the command \ref  meets always the error message : "Undefined control
> sequence" . I do not succed to get on html page references to numbered
> equations.
>
> Does someone can help me?
>

Sorry for this terrible fault of English...

Here is a (temporary ?)  solution:

#+OPTIONS: tex:t
#+HTML_MATHJAX: align:"center" mathml:t path:"
http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMM
"

works perfectly well.

I hope it will help.

Best

Jo.