Paul A. Rubin wrote:
> Apparently, as of a recent version, LyX loads mathptmx automatically if
> you select Times Roman as your Roman font. Since mathptmx has no bold
> symbols, I can see this being a problem, and I'm surprised it was done.
> In the short term, the workarounds are either to switch your font to
> something else or to export to LaTeX, manually edit out the
> \usepackage{mathptmx} line and then manually compile the document.
>
> Perhaps a developer can address why the change was made?
Short answer:
http://tug.ctan.org/get/info/l2tabu/english/l2tabuen.pdf
(sec. 2.3.1)
Jürgen
