--- a/motivation/presentation.tex	Wed Oct 03 20:33:50 2012 +0200
+++ b/motivation/presentation.tex	Wed Oct 03 20:34:39 2012 +0200
@@ -13,22 +13,12 @@
 \usepackage{xcolor}
 \usepackage{xspace} % Abstand hinter Variablennamen
 \usepackage{fix-cm}
-\usepackage{tikz}
 %\usepackage[square, sort, numbers, authoryear]{natbib}
 
 \usepackage{beamerthemeLEA2}
 
 %\bibliographystyle{plainnat}
 
-\newcommand{\N}       {\mathbb{N}}          % natürliche Zahlen
-\newcommand{\Z}       {\mathbb{Z}}          % ganze Zahlen
-\newcommand{\R}       {\mathbb{R}}          % reelle Zahlen
-\newcommand{\Prob}    {\mathrm{P}}          % Wahrscheinlichkeit
-\newcommand{\inter}   {\cap}                % Schnittmenge
-\newcommand{\union}   {\cup}                % Vereinigung
-\newcommand{\Oh}      {\mathcal{O}}         % O-Notation (Landau-Symbole)
-\newcommand{\mycite}[1]{\textcolor{tumgreen}{[#1]}} 
-
 \newenvironment{changemargin}[2]{% 
   \begin{list}{}{%
     \setlength{\topsep}{0pt}%
@@ -41,21 +31,6 @@
   \item[]}{\end{list}}
 
 
-\usetikzlibrary{shapes.geometric}
-\pgfdeclarelayer{background}
-\pgfdeclarelayer{midground}
-\pgfsetlayers{background,midground,main}
-\tikzstyle{vertex}=[circle,draw,fill=blue!25,minimum size=20pt,inner sep=0pt]
-\tikzstyle{selected vertex} = [vertex, fill=red!50]
-\tikzstyle{small vertex} = [vertex, minimum size=12pt]
-\tikzstyle{edge} = [draw,thick,-]
-\tikzstyle{tree edge} = [draw,very thick,->]
-\tikzstyle{left edge} = [draw,thick,->, blue]
-\tikzstyle{right edge} = [draw,thick,->, red]
-\tikzstyle{back edge} = [draw,dashed,arrows={-latex}]
-\tikzstyle{selected edge} = [draw,line width=5pt,-,red!50]
-
-
 \title{Motivation}
 \subtitle{Tutorseminar}
 \author{\href{mailto:markus.kaiser@in.tum.de}{Markus Kaiser} \and Fabian Raab \and Marc Stanglmayr}