Vielen Dank.
Die Pakete sind auch gespeichert.
\begin{figure}[htb] \centering \begin{minipage}[t]{.45\linewidth} \centering \begin{tikzpicture}[scale=2] % Knoten \node (A) at (1,2) [circle,draw] {1}; \node (B) at (2,2) [circle,draw] {2}; \node (D) at (2,1.25) [circle,draw] {4}; %\node (D) at (1,1) [circle,draw] {D}; \node (C) at (1,1.25) [circle,draw] {3}; % Kanten \draw[->] (A) to (B); \draw[->] (B) to (A); %\draw[-] (E) to (D); %\draw[-] (E) to (B); %\draw[-] (E) to (A); \draw[<-] (D) to (C); \draw[<-] (C) to (D); \end{tikzpicture} \subcaption{Test1} \end{minipage}% \hfill% \begin{minipage}[t]{.45\linewidth} \centering $\left( \begin{array}{rrrr} 0 & 1 & 0 & 0 \\ 1 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1 \\ 0 & 0 & 1 & 0 \\ \end{array}\right)$ \subcaption{Test2} \end{minipage} \caption{Bildtitel} \end{figure}