I want to use a font available in TeX that have the following features:
- Sans
- g is as usual sans g
- a likes uprighted italic math
$a$
ɑ - with ā á ǎ à and the like for o, e, i, u, ü, AOEIUÜ
See http://www.tug.dk/FontCatalogue/sansseriffonts.html
Avantgarde suffie. Add \usepackage{avant}
to use it.
If you want to use a sans serif font for your main text and for math, try the mathastext package. http://jf.burnol.free.fr/showcase.html shows many examples of the usage.
You must be looking for a Pinyin font, right?