Working with XeLaTex, I use the package unicode-math in my document. Everything is fine except for the mathbb characters, which I would like to have the ordinary way. With unicode-math, \mathbb{R} produces:
while I'd like to have:
(but still use unicode-math for everything else). Now I want to add a command like:
\setmathfont[range=\mathbb]{??Computer Modern??}
where ??Computer Modern?? has to be replaced by the appropriate font name, in order to get back the mathbb symbols which are used before unicode-math is loaded. The problem is, I don't know the appropriate font name of the standard math font (should be Computer Modern or Latin Modern Math or something like that). I have already tried loads of different strings, including "cm", "lmr", "Computer Modern" etc. Any suggestions for the font name which is required by \setmathfont here?