added definition style

Latex/titelmakros.tex

@@ -49,6 +49,11 @@
 \usepackage{amsmath}
 \usepackage{amssymb}
 
+\usepackage{amsthm}
+\theoremstyle{definition}
+\newtheorem{definition}{Definition}
+
+
 \ifthenelse{\boolean{\biber}}{
 	% only needed for biber
 	\usepackage[style=authoryear,natbib=true,backend=biber,mincitenames=1,maxcitenames=2,maxbibnames=99,uniquelist=false,dashed=false]{biblatex}