\pdfoutput=1
\documentclass[a4paper,12pt]{article}

\usepackage{amssymb}
\usepackage{german}
\usepackage{umlaut}
\usepackage{graphicx}
\usepackage{bbold}
\usepackage{bbm}
\usepackage{amsmath}
\usepackage{amstext}
\usepackage{amsfonts}


\setlength{\parindent}{0pt}

\setlength{\voffset}{-1in}
\setlength{\hoffset}{-1in}

\setlength{\oddsidemargin}{3cm}
\setlength{\textheight}{26cm}
\setlength{\textwidth}{15cm}

\setlength{\topmargin}{1cm}
\setlength{\headheight}{0cm}



\newcommand{\bm}[1]{\mbox{\boldmath $ #1 $}}
\newcommand{\bra}{\langle}
\newcommand{\ket}{\rangle}
\renewcommand{\vec}[1]{\boldsymbol{#1}}
\renewcommand{\le}{\leqslant}
\renewcommand{\thefootnote}{\fnsymbol{footnote}}

\DeclareMathOperator{\sgn}{sgn}
\DeclareMathOperator{\erf}{erf}

\newcounter{AufgNr}

\def\theAufgNr{\arabic{AufgNr}}

\newenvironment{Einrueckung}{
  \begin{list}{}{
      \setlength{\topsep}{-\parskip}
      \setlength{\partopsep}{0cm} }
      \setlength{\rightmargin}{0pt}
    \item[] }{
  \end{list} }


\newenvironment{Aufgabe}[1]{
  \vspace{\topsep} \refstepcounter{AufgNr} {\bf Aufgabe \theAufgNr: #1}
  \vspace{\topsep}
  \begin{Einrueckung}
}{
  \end{Einrueckung}
  \vspace{\topsep}
}
