X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-algebra.tex;h=4f3f79cd5dab03694d66be516bb4b157c7c1e1c9;hp=0b8dc93c2df8ad9da5f2b911c61eb251bc8f6b43;hb=42bef52e8272b97d0fae6243dd7621b793086e28;hpb=37b342a8a6fada8b0fbe828bdf97f346b538f5f4

diff --git a/mjo-algebra.tex b/mjo-algebra.tex
index 0b8dc93..4f3f79c 100644
--- a/mjo-algebra.tex
+++ b/mjo-algebra.tex
@@ -15,6 +15,10 @@
 % some cases for... a quotient field (something mod something).
 \newcommand*{\Frac}[1]{\operatorname{Frac}\of{{#1}}}
 
+% The ideal generated by its argument, a subset consisting of ring or
+% algebra elements.
+\newcommand*{\ideal}[1]{\operatorname{ideal}\of{{#1}}}
+
 % The polynomial ring whose underlying commutative ring of
 % coefficients is the first argument and whose indeterminates (a
 % comma-separated list) are the second argumnt.