# [LON-CAPA-users] FW: printing of math

Damien Guillaume damieng at msu.edu
Wed Dec 2 09:59:02 EST 2015

> Hi. You should use the latex LaTeX math delimiters inside:
>
>     <m> $\widetilde{\nu}=1/\lambda$ </m>
> or <m> $$\widetilde{\nu}=1/\lambda$$ </m>
> or <m> $\widetilde{\nu}=1/\lambda$ </m>

Yes, and this is a known bug. Users who use MathJax rendering do not see
an error when they do not use \$ delimiters, but their equations are not
visible to people using a different math renderer (like tth, which is
the current default). And printing fails.
There are other issues related to the use of several math renderers. For
instance in this case \widetilde is not recognized by tth. Currently it
might be better for authors to use tth, or to try different renderers.

Damien