For korean sentences, I am using XeConTeXt with korean otf font as
the bodyfont. In that case, greek capital letters in math mode are
not displayed wit the warning message
"** WARNING ** Glyph for CID 18168 missing in font "YoonMyungjoM/H".
YoonMyungjoM is the name of the korean font.
If I set english font as the bodyfont, they are displayed well.
I think that korean font override the greek capital letters.
Hence, I'd like to know the followings:
(1) Is there a math font which can be used in XeConTeXt?
(2) Is there a way to not to override greek capital letters in math