\def\havemjocommon{1}
-\ifx\mathbb\undefined
- \usepackage{amsfonts}
-\fi
+\input{mjo-font} % amsfonts and \mathpzc
\ifx\bigtimes\undefined
\usepackage{mathtools}
\newcommand*{\directsummany}[3]{ \binopmany{\bigoplus}{#1}{#2}{#3} }
\newcommand*{\unionmany}[3]{ \binopmany{\bigcup}{#1}{#2}{#3} }
+\newcommand*{\powerset}[1]{\mathpzc{P}\of{{#1}}}
+\ifdefined\newglossaryentry
+ \newglossaryentry{powerset}{
+ name={\ensuremath{\powerset{X}}},
+ description={the ``powerset,'' or set of all subsets of $X$},
+ sort=p
+ }
+\fi
% The four standard (UNLESS YOU'RE FRENCH) types of intervals along
% the real line.