--- a/slides/slides01.tex	Mon Nov 08 23:17:51 2021 +0000
+++ b/slides/slides01.tex	Wed Dec 01 07:51:21 2021 +0000
@@ -920,7 +920,7 @@
 \end{center}
 \end{frame}
 
-\begin{frame}<1-10>[t]
+\begin{frame}<1-20>[t]
   
 \end{frame}