deletions | additions       diff --git a/header.tex b/header.tex  index 542991d..6be7d8f 100644  --- a/header.tex  +++ b/header.tex 
...
\def\reale{\mathbb{R}}  \def\intregi{\mathbb{Z}}  \def\complexe{\mathbb{C}}  \newtheorem{definitie}{Definitie}  \newtheorem{afirmatie}{Afirmatie}  \newtheorem*{argument}{Argument}  \newtheorem{notatie}{Notatie}