diff --git a/background.tex b/background.tex
index 6daed4e6571ea0ce458295e8ca4b9ba2a1dd0242..a1c3888ae1b986576ed3311b7c21b23051c052e5 100644
--- a/background.tex
+++ b/background.tex
@@ -1,4 +1,4 @@
-\section{Preliminaries \emph{\&} Precedents}
+\section{Prolegomena \emph{\&} Precedents}
 \label{def:background}
 
 \begin{example}\label{ex:set}
@@ -226,4 +226,4 @@
 %%% TeX-master: "master"
 %%% End:
 
-% LocalWords:  homomorphisms morphism
+% LocalWords:  homomorphisms morphism Prolegomena