test
$\displaystyle \sigma $
More round means bigger (as it has to cross both integral signs in an
esthetically pleasing manner), which is horrible.
Closer together integral signs could also be used but now we are talking
about rather more LaTeX, and things are horrible again (but invisible).
RonL
Testing LaTeX color
$\displaystyle \color{blue}a+b+c=0$
$\displaystyle \color{red}\iint_R\left(\frac{\partial^2g}{\partia l{y^2}}+\frac{\partial^2g}{\partial{x^2}}\right)~d s=\iint_R\Delta{g}~ds~\blacksquare$
Are you gonna install the Cancel Package MG?
Also, green color is extremely blind
$\displaystyle {\color{red}\iint_R\left(\frac{\partial^2g}{\parti al{y^2}}+\frac{\partial^2g}{\partial{x^2}}\right)~ ds}=\iint_R\Delta{g}~ds~\blacksquare$
Code
{\color{red}\iint_R\left(\frac{\partial^2g}{\parti al{y^2}}+\frac{\partial^2g}{\partial{x^2}}\right)~ ds}=\iint_R\Delta{g}~ds~\blacksquare
Krizalid do you know how to make a double contour integral?
This is how CaptainBlank does it,
$\displaystyleCode:\skew{57} {\skew{15}\subset \supset} \iint \mbox{ }
\skew{57} {\skew{15}\subset \supset} \iint \mbox{ }
$
The old command was either \ooint or \oiint
But they do not work now.
What command did you use to create your avatar on AoPs?