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diff --git a/vorlesungen/slides/6/produkte/direkt.tex b/vorlesungen/slides/6/produkte/direkt.tex
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+%
+% direkt.tex -- slide template
+%
+% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
+%
+\bgroup
+\begin{frame}[t]
+\setlength{\abovedisplayskip}{5pt}
+\setlength{\belowdisplayskip}{5pt}
+\frametitle{Direktes Produkt}
+\vspace{-20pt}
+\begin{columns}[t,onlytextwidth]
+\begin{column}{0.48\textwidth}
+\begin{block}{Definition}
+Zwei Gruppen $H_1$ und $H_2$
+\\
+Gruppe $G=H_1\times H_2$ mit
+\begin{itemize}
+\item<2-> Elemente  $(h_1,h_2)\in H_1\times H_2$
+\item<3-> Neutrales Element $(e_1,e_2)$
+\item<4-> Inverses Elemente $(h_1,h_2)^{-1}=(h_1^{-1},h_2^{-1})$
+\end{itemize}
+heisst {\em direktes Produkt}
+\end{block}
+\uncover<5->{%
+\begin{block}{Vertauschbarkeit}
+Das direkte Produkt ist ein Produkt, in dem Elemente von $H_1$ und
+$H_2$ vollständig vertauschbar sind
+\end{block}}
+\end{column}
+\begin{column}{0.48\textwidth}
+\uncover<6->{%
+\begin{block}{Universelle Eigenschaft}
+\begin{center}
+\begin{tikzpicture}[>=latex,thick]
+\coordinate (S) at (0,2.5);
+\coordinate (H1) at (-2.5,0);
+\coordinate (H2) at (2.5,0);
+
+\node at (H1) {$H_1$};
+\node at (H2) {$H_2$};
+\node at (0,0) {$H_1\times H_2$};
+\node at (S) {$S$};
+
+\draw[->,shorten >= 0.25cm,shorten <= 0.8cm] (0,0) -- (H1);
+\draw[->,shorten >= 0.25cm,shorten <= 0.8cm] (0,0) -- (H2);
+
+\draw[->,shorten >= 0.25cm,shorten <= 0.25cm] (S) -- (H1);
+\draw[->,shorten >= 0.25cm,shorten <= 0.25cm] (S) -- (H2);
+
+\node at ($0.5*(S)+0.5*(H1)$) [above left] {$f_1$};
+\node at ($0.5*(S)+0.5*(H2)$) [above right] {$f_2$};
+
+\uncover<7->{
+\draw[->,shorten >= 0.25cm,shorten <= 0.25cm,color=red] (S) -- (0,0);
+\node[color=red] at ($0.36*(S)$) [left] {$f_1\times f_2$};
+\node[color=red] at ($0.36*(S)$) [right] {$\exists!$};
+}
+
+\end{tikzpicture}
+\end{center}
+\end{block}}
+\end{column}
+\end{columns}
+\end{frame}
+\egroup