--- a/notes/tex/preamble.tex	Tue Oct 22 00:24:27 2013 +0200
+++ b/notes/tex/preamble.tex	Mon Oct 28 22:24:22 2013 +0100
@@ -7,6 +7,7 @@
 \usepackage[T1]{fontenc}
 \usepackage[utf8]{inputenc}
 
+\usepackage{mathpazo}
 \usepackage{helvet}
 \usepackage{microtype}
 
@@ -15,12 +16,14 @@
 \usepackage{xcolor}
 \usepackage{tikz}
 \usepackage{pgfplots}
+\pgfplotsset{compat=1.8}
 \usetikzlibrary{automata}
 \usetikzlibrary{calc}
 \usetikzlibrary{shapes}
 \usetikzlibrary{positioning}
 \usetikzlibrary{chains}
 
+\usepackage{amsmath}
 \usepackage{mathdots}
 \usepackage{mathtools}
 \mathtoolsset{showonlyrefs}
@@ -41,4 +44,14 @@
 \newcommand{\powerset}[1]{\mathcal{P}\left( #1 \right)}
 \newcommand{\setnot}[1]{\overline{#1}}
 \newcommand{\setsymdiff}{\,\triangle\,}
+
+\newcommand{\rel}[1]{\,\mathrm{#1}\,}
+
 \newcommand{\defeq}{\mathrel{\vcenter{\baselineskip0.5ex\lineskiplimit0pt\hbox{\scriptsize.}\hbox{\scriptsize.}}}=}
+
+\tikzstyle{edge} = [draw,very thick,->,>=latex]
+\tikzstyle{pretty} = [circle,thick,draw,fill=tumblue!10]
+\tikzstyle{every edge} = [edge]
+\tikzstyle{every state} = [pretty]
+\tikzstyle{automaton} = [shorten >=1pt, node distance = 3cm, auto, bend angle=20, initial text=]
+\tikzstyle{small} = [every node/.style={scale=0.5}, baseline=(current bounding box.north), font=\LARGE]