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I'm using the org-mode to write some mathematical notes, so I'm using latex fragments like $\frac{a}{b}$ a lot. However, if I succeed the fragment with a dash, like $\frac{a}{b}$-fraction, it will not render (preview) the fragment.

Questions: (1) How can I override this behavior and make it show? (2) Is this the intended behavior or strictly a bug?

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2 Answers 2

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Use \(...\) instead of $...$ and it should work just fine.

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  • does it work fine for you? for me it isn't recognized as math mode, so it gets typeset as regular text, not a formula
    – Tyler
    Dec 7, 2017 at 22:01
  • actually works for me
    – Zuza
    Dec 8, 2017 at 20:46
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Org-mode recognizes Latex fragments by the $ symbol at the start and end of the fragment. If you add a trailing -, then the fragment doesn't end with a $ anymore, so Org won't recognize it as a fragment. You can work around this by placing a space between the closing $ and the -: 

$\frac{a}{b}$ -fraction
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  • But how can one then supress the space during export? Note that this is possible when dealing with emphasis: /wh/-pronoun.
    – Timm
    Nov 30, 2017 at 21:35
  • The code for font-locking, responsible for bold and emphasis, is different than the code for identifying code fragments, so they will not necessarily behave the same. Another work around: try $\frac{a}{b} - \text{fraction}$. Do you need to have the '-fraction' outside the fragment for some reason?
    – Tyler
    Nov 30, 2017 at 21:45
  • Does the following work? $\frac{a}{b}$ \hspace{-\em} (or -\thinspace)?
    – mankoff
    Dec 7, 2017 at 20:18

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