I'm using \widehat
to represent a mapping, so I would like to use it without arguments, for example,
Consider a mapping $\widehat{} : A \to B$, where $\widehat{a} = $...
Now the problem with this is that the spacing without any arguments is terrible, especially when I use it in text (e.g. The mapping $\widehat{}$ above
renders terribly).
Is there any way I can make the spacing behave well? I tried doing things like \widehat{~}
or \mathop{\widehat{~}}
which made it a bit better, but it was still too close together in the text.
$\widehat{\hspace{.7em}}$
to check what number to put in (may be .8em or .9em), put brackets around to have a sense of how much width are you giving to the symbol$[\widehat{\hspace{.7em}}]$
.\widehat{\phantom{X}}
, whereX
is your favourite character.