added varepsilon and bem*

lecture.cls

@@ -97,6 +97,7 @@
 
 \newtheorem{bsp}[satz]{Example}
 \newtheorem{bem}[satz]{Remark}
+\newtheorem*{bem*}{Remark}
 \newtheorem{aufgabe}[satz]{Exercise}
 
 \counterwithin{figure}{chapter}
@@ -280,3 +281,5 @@
 
 % add one equation tag to the current line to otherwise unnumbered environment
 \newcommand{\tageq}{\stepcounter{equation}\tag{\theequation}}
+
+\newcommand{\ve}{\varepsilon}