diff -r c980e0fe7707 -r c70ee2ea48b6 preamble.tex
--- a/preamble.tex	Wed May 28 19:02:10 2008 +0000
+++ b/preamble.tex	Thu May 29 05:07:03 2008 +0000
@@ -122,6 +122,9 @@
 \newcommand{\cone}[3]{C\left(#1 \xrightarrow{#2} #3\right)}
 \newcommand{\pairing}[2]{\left\langle#1 ,#2 \right\rangle}
 
+\newcommand{\floor}[1]{\left\lfloor#1\right\rfloor}
+\newcommand{\norm}[1]{\left|\left|#1\right|\right|}
+
 \newcommand{\card}[1]{\sharp{#1}}
 
 \newcommand{\bdy}{\partial}