I think these fonts were from old mathematica font package perhaps? They are named like the old mathematica fonts which were installed by "ttf-mathematica 4.1", but are now installed by mathematica-fonts. I don't believe this is an issue with xfonts-mathml.
Pander,
I think these fonts were from old mathematica font package perhaps? They are named like the old mathematica fonts which were installed by "ttf-mathematica 4.1", but are now installed by mathematica-fonts. I don't believe this is an issue with xfonts-mathml.