\documentclass[envcountsect,notheorems,handout,compress]{beamer}
%\newtheorem{theorem}{Satz \thesection.\thetheorem}[subsection]
% \newtheorem{theorem}{Satz \thesection.\thetheorem}
% \newtheorem{definition}[theorem]{Definition \thesection.\thetheorem}
% \newtheorem{lemma}[theorem]{Lemma \thesection.\thetheorem}
% \newtheorem{example}[theorem]{Beispiel \thesection.\thetheorem}
% \newtheorem{corollary}[theorem]{Korollar \thesection.\thetheorem}
% \newtheorem{remark}[theorem]{Bemerkung \thesection.\thetheorem}
% \newtheorem{algorithmus}[theorem]{Algorithmus \thesection.\thetheorem}
\newenvironment{cont}[1]{\begin{block}{Fortsetzung von \thetheorem: #1}}{\end{block}}
\newcommand{\klein}{\small}
\newcommand{\sehrklein}{\footnotesize}
%\newcommand{\inhalt}{\frame<presentation>{\footnotesize\tableofcontents[currentsection,subsectionstyle=show/hide/hide]}}
\usepackage{pgfpages}
%\pgfpagesuselayout{resize to}[a4paper,landscape]
\input{main}