X-Git-Url: http://gitweb.michael.orlitzky.com/?p=mjotex.git;a=blobdiff_plain;f=examples.tex;h=e0ffcb97a11ce5a97a2e837e7c994fd19714e1ae;hp=98ddfd550b08ea4fd78301eb47c0aea19cb8de7a;hb=987368c596bfe23dbcbaf5260a0d7011c9d3fc1e;hpb=5c4f67545f0988d065f1d52f90eed9233562c9fc

diff --git a/examples.tex b/examples.tex
index 98ddfd5..e0ffcb9 100644
--- a/examples.tex
+++ b/examples.tex
@@ -28,7 +28,8 @@
   \begin{section}{Arrow}
     The identity operator on $V$ is $\identity{V}$. The composition of
     $f$ and $g$ is $\compose{f}{g}$. The inverse of $f$ is
-    $\inverse{f}$.
+    $\inverse{f}$. If $f$ is a function and $A$ is a subset of its
+    domain, then the preimage under $f$ of $A$ is $\preimage{f}{A}$.
   \end{section}
 
   \begin{section}{Common}