--- a/slides/slides03.tex	Tue Oct 06 00:39:34 2020 +0100
+++ b/slides/slides03.tex	Tue Oct 06 13:32:00 2020 +0100
@@ -55,17 +55,17 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
-\frametitle{Scala Book, Exams}
+%\begin{frame}[c]
+%\frametitle{Scala Book, Exams}
+%
+%\begin{itemize}
+%\item \small https://nms.kcl.ac.uk/christian.urban/ProgInScala2ed.pdf\normalsize
+%\item homework (written exam 80\%)
+%\item coursework (20\%)\bigskip
+%\item short survey at KEATS; to be answered until Sunday    
+%\end{itemize}
 
-\begin{itemize}
-\item \small https://nms.kcl.ac.uk/christian.urban/ProgInScala2ed.pdf\normalsize
-\item homework (written exam 80\%)
-\item coursework (20\%)\bigskip
-\item short survey at KEATS; to be answered until Sunday    
-\end{itemize}
-
-\end{frame}
+%\end{frame}
 %%%%%%%%%%%
 
 
@@ -92,7 +92,7 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
+\begin{frame}[t]
 \frametitle{Negation}
 
 Assume you have an alphabet consisting of the letters \bl{$a$}, \bl{$b$} and \bl{$c$} only.