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+\documentclass[10pt,a4paper,oneside,ngerman,numbers=noenddot]{scrartcl}
+\usepackage[T1]{fontenc}
+\usepackage[utf8x]{inputenc}
+\usepackage[ngerman]{babel}
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\usepackage{amssymb}
+\usepackage{paralist}
+\usepackage{gauss}
+\usepackage{pgfplots}
+\usepackage[locale=DE,exponent-product=\cdot,detect-all]{siunitx}
+\usepackage{tikz}
+\usetikzlibrary{automata,matrix,fadings,calc,positioning,decorations.pathreplacing,arrows,decorations.markings,petri}
+\usepackage{polynom}
+\usepackage{multirow}
+\usepackage[german]{fancyref}
+\polyset{style=C, div=:,vars=x}
+\pgfplotsset{compat=1.8}
+\pagenumbering{arabic}
+% ensures that paragraphs are separated by empty lines
+\parskip 12pt plus 1pt minus 1pt
+\parindent 0pt
+% define how the sections are rendered
+\def\thesection{8.\arabic{section})}
+\def\thesubsection{\arabic{subsection}.}
+\def\thesubsubsection{(\alph{subsubsection})}
+% some matrix magic
+\makeatletter
+\renewcommand*\env@matrix[1][*\c@MaxMatrixCols c]{%
+  \hskip -\arraycolsep
+  \let\@ifnextchar\new@ifnextchar
+  \array{#1}}
+\makeatother
+
+\tikzset{
+    place/.style={
+        circle,
+        thick,
+        draw=black,
+        fill=white,
+        minimum size=6mm,
+        font=\bfseries
+    },
+    transitionH/.style={
+        rectangle,
+        thick,
+        draw=black,
+        fill=white,
+        minimum width=8mm,
+        inner ysep=4pt,
+        font=\bfseries
+    },
+    transitionV/.style={
+        rectangle,
+        thick,
+        fill=black,
+        minimum height=8mm,
+        inner xsep=2pt
+    }
+}
+
+\begin{document}
+\author{Benjamin Kuffel, Jim Martens\\Gruppe 6}
+\title{Hausaufgaben zum 8. Dezember}
+\maketitle
+
+\setcounter{section}{2}
+\section{} %8.3
+	\subsection{}
+	Die Prozesse sind auf den Abbildungen von \fref{fig:831-1} bis \fref{fig:831-18} zu sehen.
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+	\end{tikzpicture}
+	\caption{Prozess 1 für 8.3.1}
+	\label{fig:831-1}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=0.5 of b2] {b4};
+		\node[place] (b5) [below=0.5 of b3] {b5};
+		
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5);
+	\end{tikzpicture}
+	\caption{Prozess 2 für 8.3.1}
+	\label{fig:831-2}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b6);
+	\end{tikzpicture}
+	\caption{Prozess 3 für 8.3.1}
+	\label{fig:831-3}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b6);
+	\end{tikzpicture}
+	\caption{Prozess 4 für 8.3.1}
+	\label{fig:831-4}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b6);
+	\end{tikzpicture}
+	\caption{Prozess 5 für 8.3.1}
+	\label{fig:831-5}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b6);
+	\end{tikzpicture}
+	\caption{Prozess 6 für 8.3.1}
+	\label{fig:831-6}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7);
+	\end{tikzpicture}
+	\caption{Prozess 7 für 8.3.1}
+	\label{fig:831-7}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7);
+	\end{tikzpicture}
+	\caption{Prozess 8 für 8.3.1}
+	\label{fig:831-8}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7);
+	\end{tikzpicture}
+	\caption{Prozess 9 für 8.3.1}
+	\label{fig:831-9}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7);
+	\end{tikzpicture}
+	\caption{Prozess 10 für 8.3.1}
+	\label{fig:831-10}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b8) [right=of c] {b8};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b8);
+	\end{tikzpicture}
+	\caption{Prozess 11 für 8.3.1}
+	\label{fig:831-11}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b8) [right=of c] {b8};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b8);
+	\end{tikzpicture}
+	\caption{Prozess 12 für 8.3.1}
+	\label{fig:831-12}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b8) [right=of b] {b8};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b8);
+	\end{tikzpicture}
+	\caption{Prozess 13 für 8.3.1}
+	\label{fig:831-13}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b8) [right=of b] {b8};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b8);
+	\end{tikzpicture}
+	\caption{Prozess 14 für 8.3.1}
+	\label{fig:831-14}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b8) [right=of c] {b8};
+		\node[transitionH] (d2) [right=of b8] {d};
+		\node[place] (b9) [right=of d2] {b9};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b8)
+			(b8) edge (d2)
+			(d2) edge (b9);
+	\end{tikzpicture}
+	\caption{Prozess 15 für 8.3.1}
+	\label{fig:831-15}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b6) [right=of b] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b8) [right=of c] {b8};
+		\node[transitionH] (d2) [right=of b8] {d};
+		\node[place] (b9) [right=of d2] {b9};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b8)
+			(b8) edge (d2)
+			(d2) edge (b9);
+	\end{tikzpicture}
+	\caption{Prozess 16 für 8.3.1}
+	\label{fig:831-16}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [below right=0.5 and 1 of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (b) [above right=0.5 and 1 of b2] {b};
+		\node[place] (b8) [right=of b] {b8};
+		\node[transitionH] (d2) [right=of b8] {d};
+		\node[place] (b9) [right=of d2] {b9};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b3) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b2) edge (b)
+			(b4) edge (b)
+			(b) edge (b8)
+			(b8) edge (d2)
+			(d2) edge (b9);
+	\end{tikzpicture}
+	\caption{Prozess 17 für 8.3.1}
+	\label{fig:831-17}
+	\end{figure}
+	
+	\begin{figure}	
+	\begin{tikzpicture}[node distance=1cm]
+		\node[place] (b1) {b1};
+		\node[transitionH] (a) [right=of b1] {a};
+		\node[place] (b2) [right=of a] {b2};
+		\node[place] (b3) [below=0.25 of b2] {b3};
+		\node[place] (b4) [above=of b2] {b4};
+		\node[place] (b5) [below=of b3] {b5};
+		\node[transitionH] (c) [right=of b3] {c};
+		\node[place] (b6) [right=of c] {b6};
+		\node[transitionH] (d) [right=of b6] {d};
+		\node[place] (b7) [right=of d] {b7};
+		\node[transitionH] (b) [right=of b2] {b};
+		\node[place] (b8) [right=of b] {b8};
+		\node[transitionH] (d2) [right=of b8] {d};
+		\node[place] (b9) [right=of d2] {b9};
+		\path[->] (b1) edge (a)
+			(a) edge (b2)
+			(a) edge (b3)
+			(a) edge (b4)
+			(a) edge (b5)
+			(b2) edge (c)
+			(b5) edge (c)
+			(c) edge (b6)
+			(b6) edge (d)
+			(d) edge (b7)
+			(b3) edge (b)
+			(b4) edge (b)
+			(b) edge (b8)
+			(b8) edge (d2)
+			(d2) edge (b9);
+	\end{tikzpicture}
+	\caption{Prozess 18 für 8.3.1}
+	\label{fig:831-18}
+	\end{figure}
+	
+\section{} %8.4
+\section{} %8.5
+\end{document}