%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% make the index link to the correct part of the page               %
% http://tex.stackexchange.com/q/74493/5645                         %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcounter{indexanchor}
\newcommand*{\xindex}[1]{%
  \stepcounter{indexanchor}% make anchor unique
  \def\theindexterm{#1}%
  \edef\doindexentry{\noexpand\index
    {\expandonce\theindexterm|indexanchor{index-\theindexanchor}}}%
  \raisebox{\baselineskip}{\hypertarget{index-\theindexanchor}%
    {\doindexentry}}%
}
\newcommand*{\indexanchor}[2]{\hyperlink{#1}{#2}}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\theoremstyle{break}
\setlength\theoremindent{0.7cm}
\theoremheaderfont{\kern-0.7cm\normalfont\bfseries} 
\theorembodyfont{\normalfont} % nicht mehr kursiv

\newframedtheorem{satz}{Satz}[chapter]
\newframedtheorem{lemma}[satz]{Lemma}
\newtheorem{plaindefinition}{Definition}
\newenvironment{definition}{\begin{plaindefinition}}{\end{plaindefinition}}
\newenvironment{definition*}{\begin{plaindefinition*}}{\end{plaindefinition*}}
\newtheorem{beispiel}{Beispiel}
\newtheorem{bemerkung}{Bemerkung}

\def\fB{\mathfrak{B}}%Für Basis
\def\fT{\mathfrak{T}}%Für Topologie
\newcommand{\powerset}[1]{\mathcal{P}(#1)}
\def\mdr{\ensuremath{\mathbb{R}}}
\def\mdq{\ensuremath{\mathbb{Q}}}
\def\mdz{\ensuremath{\mathbb{Z}}}
\def\gdw{\ensuremath{\Leftrightarrow}}