X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=mjo-algebra.tex;fp=mjo-algebra.tex;h=25b96d9f8a184edc051ed2867bc8fa9b4b0a269b;hp=36ad4bd64888c1b2926ff2d454c989e3a561a6aa;hb=8b880c1436d7e93279391ba362ab07c86272a449;hpb=390a27bedd90d549cefe80c0a973575b8a636978

diff --git a/mjo-algebra.tex b/mjo-algebra.tex
index 36ad4bd..25b96d9 100644
--- a/mjo-algebra.tex
+++ b/mjo-algebra.tex
@@ -12,6 +12,18 @@
 \input{mjo-common} % for \of, and \binopmany
 
 
+% The additive identity element of its argument, which should be
+% an algebraic structure.
+\newcommand*{\zero}[1]{ 0_{{#1}} }
+
+\ifdefined\newglossaryentry
+  \newglossaryentry{zero}{
+    name={\ensuremath{\zero{R}}},
+    description={the additive identity element of $R$},
+    sort=z
+  }
+\fi
+
 % The multiplicative identity element of its argument, which should be
 % an algebraic structure.
 \newcommand*{\unit}[1]{ 1_{{#1}} }