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\begin{module}[id=functions]%
\symdef[assocarg=1]{cart}[1]{\assoc[p=500]{\times}{#1}}%
\symdef{fun}[3]{\mixfixiii[p=200]{}{#1}{\colon}{#2}{\rightarrow}{#3}{}}%
\symdef{inset}[2]{\infix[p=650]{\in}{#1}{#2}}%
\symdef[name=sseteq]{sseteqOp}{\subseteq} %
\symdef{sseteq}[2]{\infix[p=300]\sseteqOp{#1}{#2}} %
\symdef{tup}[1]{\langle#1\rangle}%
\symdef{cart}[1]{\assoc\times{#1}}%
\symdef[name=setdiff]{setdiffOp}{\backslash}%
\symdef{setdiff}[2]{\mixfixii[p=600]{}{#1}\setdiffOp{#2}{}} %
\symdef[assocarg=1]{set}[1]{\mixfixa[nobrackets]{\{}{#1}{\}},}%
\symdef{setst}[2]{\mixfixii[nobrackets]{\{}{#1}{\,\mid\,}{#2}{\}}}%
\end{module}%
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