LaTeX provides \doteq, which produces an equals sign with a dot above
it. I'm trying to produce an equals sign with dots above and below:
let's call this \dotdoteq. All my attempts so far have failed with dots
at the wrong height; and, in some, the dots are not quite centred above
and below the equals sign -- they're slightly displaced to the right. To
my surprise, \doteq also exhibits the second deficiency.
So, two questions:
1. What's wrong with \doteq? (It's defined as
\buildrel \textstyle .\over =
This is in LaTeX 2.09 <7 Dec 1989>)
2. How can I build a \dotdoteq?