--- a/text/ncat.tex	Tue Aug 03 21:45:10 2010 -0600
+++ b/text/ncat.tex	Wed Aug 18 21:05:50 2010 -0700
@@ -3,10 +3,10 @@
 \def\xxpar#1#2{\smallskip\noindent{\bf #1} {\it #2} \smallskip}
 \def\mmpar#1#2#3{\smallskip\noindent{\bf #1} (#2). {\it #3} \smallskip}
 
-\section{$n$-categories and their modules}
+\section{\texorpdfstring{$n$}{n}-categories and their modules}
 \label{sec:ncats}
 
-\subsection{Definition of $n$-categories}
+\subsection{Definition of \texorpdfstring{$n$}{n}-categories}
 \label{ss:n-cat-def}
 
 Before proceeding, we need more appropriate definitions of $n$-categories, 
@@ -660,7 +660,7 @@
 Conversely, given a topological $n$-category we can construct a system of fields via 
 a colimit construction; see \S \ref{ss:ncat_fields} below.
 
-\subsection{Examples of $n$-categories}
+\subsection{Examples of \texorpdfstring{$n$}{n}-categories}
 \label{ss:ncat-examples}
 
 
@@ -1515,7 +1515,7 @@
 We will define a more general self tensor product (categorified coend) below.
 
 
-\subsection{Morphisms of $A_\infty$ $1$-category modules}
+\subsection{Morphisms of \texorpdfstring{$A_\infty$}{A-infinity} 1-category modules}
 \label{ss:module-morphisms}
 
 In order to state and prove our version of the higher dimensional Deligne conjecture
@@ -1785,7 +1785,7 @@
 
 
 
-\subsection{The $n{+}1$-category of sphere modules}
+\subsection{The \texorpdfstring{$n{+}1$}{n+1}-category of sphere modules}
 \label{ssec:spherecat}
 
 In this subsection we define $n{+}1$-categories $\cS$ of ``sphere modules"