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% Math specific tcolorboxes
\newtcolorbox{formula}[2][]{mainboxstyle,colback=red!5!white,colframe=red!75!black,colbacktitle=red!75!black,title={\large #2},
overlay={\node[overlaystyle,draw=red!75!black,fill=red!75!black] at (frame.north east) {\large \ifnum\value{lang}<2{Formula}\else {Formel}\fi};},#1}


\newtcolorbox{proof}[2][]{arc=3mm,colback=magenta!5!white,colframe=magenta!75!black,colbacktitle=magenta!75!black,fonttitle=\bfseries,
enhanced,attach boxed title to top left={yshift=-2mm,xshift=5mm},title={\large #2},breakable,top=0.4cm,
overlay={\node[draw=magenta!75!black,thick,fill=magenta!75!black,left,anchor=east,text=white,rounded corners=1mm,font=\bfseries,
xshift=-5mm,yshift=1mm,inner xsep=3mm,inner ysep=1.5mm] at (frame.north east) {\large \ifnum\value{lang}<2{Proof}\else {Beweis}\fi};},#1}
