Add \zero{R} for the additive identity element in R.

[mjotex.git] / examples.tex

diff --git a/examples.tex b/examples.tex
index 7646b66183ec3ce967677147959b6ef195cb1470..015c5fd67df5aa3e5d4c272c60480694d20ba1ba 100644 (file)
--- a/examples.tex
+++ b/examples.tex
@@ -38,7 +38,8 @@
     containing the set $\set{x,y,z}$.
 
     If $R$ has a multiplicative identity (that is, a unit) element,
-    then that element is denoted by $\unit{R}$.
+    then that element is denoted by $\unit{R}$. Its additive identity
+    element is $\zero{R}$.
   \end{section}
 
   \begin{section}{Algorithm}