# [OS X TeX] missing symbols in mathptmx with pdftex

Gary L. Gray gray at engr.psu.edu
Tue Jan 29 04:18:05 CET 2008

On Jan 28, 2008, at 10:13 PM, Nathan Sanders wrote:

> A friend of mine discovered that some math symbols do not show up in
> Adobe Acrobat (v5.0, if it matters) for a PDF created by pdftex
> using mathptmx.  The following minimal example illustrates the
> problem:
>
>
> \documentclass{article}
> \usepackage{mathptmx}
> \begin{document}
>
> $> \sum_{k=1}^{\infty}\frac{1}{k^2} >$
>
> \end{document}
>
>
> If this is run through pdftex and viewed in Acrobat, the summation
> symbol is missing.  However, if dvips is used instead, or if the
> pdftex PDF is viewed in another viewer (Preview, Skim, etc.),
> everything is just fine.
>
> Is this a known issue with a known fix?  Preferably something simple
> (my friend is not very TeX-handy) that allows him to use mathptmx,
> pdftex, and Acrobat (to suit his various needs/wants)?
> ==========
>
> Can anyone else replicate this?  This only response I got on c.t.t
> was from someone who couldn't replicate it with tetex.
>
> Any help would be greatly appreciated!

Under 10.5.1, the output from your code displays perfectly in Preview
and Adobe Acrobat Professional 8.1.1. Sorry I couldn't be of more