The unary operator "not" is missing in the new equation editor. I've tried
both with and without SP1 for office 2007. I would expect to find it under
the symbol group "operators" but it is not present in any group.
The symbol is unicode 0x00AC and looks like a 90 degree angle. Here it is:
(hope it shows up correctly) ¬
It's purpose is described here
http://en.wikipedia.org/wiki/Negation
The only way to insert it into an equation seems to be to use charmap.exe or
use alt+0172. Am I doing something wrong or is it really missing?