> On Sat, Feb 07, 2009 at 03:45:45PM -0800, John Wheeler wrote:
> > [snip]
>
> You'll get incorrect spacing. Compare:
>
> [snip]
I think what you're looking for is this:
$$
\left.\frac12\middle/\frac12\right.
$$
The command \middle was mentioned in threasd ("parenthesis problem in
LaTeX") a couple of weeks ago.
Cheers, Phil