Michele's wiki/blog

You need to copy the Mathematica X fonts (both Type1 and BDF, I think) from a Unix host into /usr/X11R6/lib/X11/fonts/mathematica; then, once the X server is started, issue the commands

xset +fp /usr/X11R6/lib/X11/fonts/mathematica/Type1/
xset +fp /usr/X11R6/lib/X11/fonts/mathematica/BDF/
xset fp rehash

As long as I can tell, the Type1 fonts bundled with the OS X version of Mathematica won't work, probably because they have different encodings. Have fun!