--- a/handouts/notation.tex	Mon Aug 30 15:50:27 2021 +0100
+++ b/handouts/notation.tex	Tue Aug 31 11:49:09 2021 +0100
@@ -1,7 +1,7 @@
 \documentclass{article}
 \usepackage{../style}
 \usepackage{../langs}
-
+\usepackage{../graphics}
 
 
 \begin{document}
@@ -232,7 +232,7 @@
 \ldots
 \]
 
-\noindent but using the big union notation is more concise.
+\noindent but using the big union notation is more concise.\medskip
 
 As an aside: While this stuff about sets might all look trivial or
 even needlessly pedantic, \emph{Nature} is never simple. If you want
@@ -253,7 +253,9 @@
 \end{center}
 
 \noindent
-contain actually the same amount of elements. Does this make sense?
+contain actually the same amount of elements. Does this make sense to you?
+If yes, good. If not, then something to learn about.
+
 Though this might all look strange, infinite sets will be a
 topic that is very relevant to the material of this module. It tells
 us what we can compute with a computer (actually an algorithm) and what