%!TEX root = ../main.tex
\chapter{\background}
\label{ch:background}

\begin{definition}
Definitions can be useful for technical/mathematical thesis. There are also other environments and also the proof environment. They are defined in \texttt{thesisclass.cls}. Have a look! You can also define your own ones if your supervisor is fine with it.
\end{definition}

\begin{lemma}\label{lem:just_a_lemma}
This is a lemma.
\end{lemma}

\begin{theorem}[Gödel's incompleteness theorem]
    This is a theorem and it also has a name.
\end{theorem}
\begin{proof}
    Theorems usually come with proofs.
    This one follows from \Cref{lem:just_a_lemma}.
\end{proof}

