Nick Dokos <ndokos@gmail.com> writes:

> Dominik Schrempf <dominik.schrempf@gmail.com> writes:
>
>
>> so I found the reason. Both Org versions behave the same, sorry for the
>> confusion. The original equation that does not get exported correctly 
>> contained
>> angles:
>>
>> \begin{equation}
>>  <k_{eff}> = \frac{\sum_i w_i k_{eff}(i)}{\sum_i w_i}.
>> \end{equation}
>>
>> This equation is correctly rendered when using a .tex file and native LaTeX.
>> If the angles are removed, the Org Mode HTML export works:
>>
>> \begin{equation}
>>  k_{eff} = \frac{\sum_i w_i k_{eff}(i)}{\sum_i w_i}.
>> \end{equation}
>>
>> Does anybody know why? Is this expected behavior? Can this be changed?
>>
>
> Maybe this explains it:
>
> "...Also, since the mathematics is initially given as text on the
> page, you need to be careful that your mathematics doesn’t look like
> HTML tags to the browser (which parses the page before MathJax gets to
> see it). In particular, that means that you have to be careful about
> things like less-than and greater-than signs (< and >), and ampersands
> (&), which have special meaning to the browsers. For example,
>
> ... when $x<y$ we have ...
>
> will cause a problem, because the browser will think <y is the
> beginning of a tag named y (even though there is no such tag in
> HTML)."
>
> See
>
>        http://docs.mathjax.org/en/latest/tex.html
>
> the section entitled "TeX and LaTeX in HTML documents":