%
% Things that fit absolutely nowhere else.
%
\ifx\havemjomisc\undefined
\def\havemjomisc{1}


\ifx\operatorname\undefined
  \usepackage{amsopn}
\fi

% The cardinality of a set. The |X| notation conflicts with the
% absolute value, and the meaning of card(X) is clear at once, so we
% prefer the latter.
\newcommand*{\card}[1]{ \operatorname{card} \of{{#1}} }


\fi
