Fix a verb tense in examples.tex.

diff --git a/examples.tex b/examples.tex
index ee0409699b5a5041fe833e90dac720b8223d04f1..a491bd813ae521de8254498c3afe57f4cfca3dbf 100644 (file)
--- a/examples.tex
+++ b/examples.tex
@@ -55,7 +55,7 @@
     (indexed) union and intersections of things, like
     $\unionmany{k=1}{\infty}{A_{k}}$ or
     $\intersectmany{k=1}{\infty}{B_{k}}$. The best part about those
-    are that they do the right thing in a display equation:
+    is that they do the right thing in a display equation:
     %
     \begin{equation*}
       \unionmany{k=1}{\infty}{A_{k}} = \intersectmany{k=1}{\infty}{B_{k}}