\bigcup ( = \Union):
\bigcap ( = \Intersection):
\bigodot:
\bigoplus ( = \Oplus):
\bigotimes ( = \Otimes):
\bigsqcup:
\bigsqcap:
\biginterleave:
\biguplus:
\bigwedge ( = \Wedge):
\bigvee ( = \Vee):
\coprod ( = \coproduct):
\prod ( = \product):
\sum:
\int ( = \integral):
\iint ( = \doubleintegral):
\iiint ( = \tripleintegral):
\iiiint ( = \quadrupleintegral):
\oint ( = \conint = \contourintegral): 