--- a/preamble.tex	Wed Oct 29 05:02:14 2008 +0000
+++ b/preamble.tex	Sun Nov 16 00:13:00 2008 +0000
@@ -114,6 +114,8 @@
 \newcommand{\qMod}{\qRing-\operatorname{Mod}}
 \newcommand{\ZMod}{\Integer-\operatorname{Mod}}
 
+\def\bc{{\mathcal B}}
+
 \newcommand{\into}{\hookrightarrow}
 \newcommand{\onto}{\twoheadrightarrow}
 \newcommand{\iso}{\cong}
@@ -122,6 +124,7 @@
 \newcommand{\xto}[1]{\xrightarrow{#1}}
 \newcommand{\isoto}{\xto{\iso}}
 \newcommand{\quismto}{\xrightarrow[\text{q.i.}]{\iso}}
+\newcommand{\diffeoto}{\xrightarrow[\text{diffeo}]{\iso}}
 \newcommand{\htpyto}{\xrightarrow[\text{htpy}]{\htpy}}
 
 \newcommand{\restrict}[2]{#1{}_{\mid #2}{}}
@@ -141,6 +144,8 @@
 \newcommand{\compose}{\circ}
 \newcommand{\eset}{\emptyset}
 
+\newcommand{\Set}{\text{\textbf{Set}}}
+\newcommand{\Vect}{\text{\textbf{Vect}}}
 \newcommand{\Cat}{\mathcal{C}}
 
 \newcommand{\psmallmatrix}[1]{\left(\begin{smallmatrix} #1 \end{smallmatrix}\right)}