+
+% The affine algebraic variety consisting of the common solutions to
+% every polynomial in its argument, which should be a subset of some
+% polynomial ring.
+\newcommand*{\variety}[1]{ \mathcal{V}\of{{#1}} }
+\ifdefined\newglossaryentry
+ \newglossaryentry{variety}{
+ name={\ensuremath{\variety{I}}},
+ description={variety corresponding to the ideal $I$},
+ sort=v
+ }
+\fi
+