diff -r d75b7bfc44f2 -r d8ae97449506 text/blobdef.tex
--- a/text/blobdef.tex	Wed May 11 14:39:21 2011 -0700
+++ b/text/blobdef.tex	Fri May 13 21:01:03 2011 -0700
@@ -158,7 +158,7 @@
 a manifold.
 Thus will need to be more careful when speaking of a field $r$ on the complement of the blobs.
 
-\begin{example}
+\begin{example} \label{sin1x-example}
 Consider the four subsets of $\Real^3$,
 \begin{align*}
 A & = [0,1] \times [0,1] \times [0,1] \\