# ‘A’ with something that looks like a lower-case omega

Is this symbol used at all in math? It looks to me like an ‘A’ with a lower-case omega on top (although I'm not completely sure that the thing on top is an omega).

I am asking this question because I work on a piece of software that features a math editor. An alpha user of the software was complaining that he/she couldn't create this notation. They claimed it was some kind of vector notation. We weren’t given context by user, just that they couldn’t create.

-
As already noted in the tag excerpt: please do say where you saw this notation being used. – J. M. Nov 30 '11 at 15:04
Do they at least say what character is that? Is it just $\stackrel{\omega}{A}$? – user13838 Nov 30 '11 at 15:29
Was it the Angstrom symbol Å ? – Peter Phipps Nov 30 '11 at 17:03
No, it's not the Angstrom symbol. – Paul Reiners Nov 30 '11 at 18:59
How about an uppercase A with a tilde Ã ? (I'm going to stop looking now.) – Peter Phipps Nov 30 '11 at 19:49