--- a/preamble.tex	Tue May 05 17:27:21 2009 +0000
+++ b/preamble.tex	Sun May 24 20:30:45 2009 +0000
@@ -146,6 +146,7 @@
 
 \newcommand{\Set}{\text{\textbf{Set}}}
 \newcommand{\Vect}{\text{\textbf{Vect}}}
+\newcommand{\Kom}{\text{\textbf{Kom}}}
 \newcommand{\Cat}{\mathcal{C}}
 
 \newcommand{\psmallmatrix}[1]{\left(\begin{smallmatrix} #1 \end{smallmatrix}\right)}