3.9 Symbols with two sizes

$\sum$, $\int$, $\oint$, $\prod$, $\coprod$, $\cdot \bigsqcup$,
$\bigodot$, $\bigotimes$, $\bigoplus$, $\biguplus$, $\bigvee$,
$\bigwedge$, $\bigcap$, $\bigcup$

$$\sum, \int, \oint, \prod, \coprod, \cdot \bigsqcup, \bigodot, 
\bigotimes, \bigoplus, \biguplus, \bigvee, \bigwedge, \bigcap_{A}, 
\bigcup_{A}$$

$\sum $, $\int $, $\oint $, $\prod $, $\coprod $, $\cdot \bigsqcup $, $\bigodot $, $\bigotimes $, $\bigoplus $, $\biguplus $, $\bigvee $, $\bigwedge $, $\bigcap _{A}$, $\bigcup _{A}$