From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julius Dittmar <Julius.Dittmar@gmx.de>
Subject: Re: Latex export with \begin{equation}
Date: Thu, 13 Sep 2018 15:43:41 +0200
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Am 13.09.18 um 15:31 schrieb Dominik Schrempf:
> 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?

I can't answer any of those questions, but you as a work-around you
could use \langle and \rangle instead of < and >. That's propably more
what you want anyways, as < and > are rendered as the less operator and
the greater operator, including the appropriate spacing, whereas \langle
and \rangle behave like parenthesis.

HTH,
Julius