\documentclass[12pt,a4paper,titlepage]{article}
\setcounter{tocdepth}{2} 
\frenchspacing
\usepackage{amsthm}
\usepackage{epsfig}
\usepackage{alltt}
\usepackage{young}
\usepackage{makeidx}
\usepackage{newlfont}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{amsxtra}
\usepackage{alltt}
\usepackage{mathrsfs}
\usepackage{stmaryrd}
\usepackage{amscd}
\usepackage[ngerman]{babel}
\usepackage{verbatim}
\usepackage{ae}
\input{xy}
\xyoption{all}
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\renewcommand{\figurename}{ }
                          
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\newcommand{\changefont}[3]{
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\makeindex

\input{newcommands}



\usepackage{xr-hyper}
\usepackage[pdftex,a4paper,
        colorlinks,
        urlcolor=blue,       
        filecolor=green,     
        linkcolor=red,       
        pdftitle={Lie-Algebren und ihre Darstellungen},
        pdfauthor={Wolfgang Soergel},
        pdfsubject={Lie-Algebren},
        pdfkeywords={Lie-Algebren, Skript, Skriptum},
        bookmarksopen=true]{hyperref}
\input{externaldocuments}
\input{newtheorems}

\begin{document}
\title{DARSTELLUNGEN HALBEINFACHER LIE-ALGEBREN}
\author{Wolfgang Soergel}
\maketitle
\setcounter{page}{2}


\include{VorredeLieA}
\tableofcontents

\newpage

\include{Lie04EinfacheEndlichDarstellungen}\newpage %b
\include{EinfachVerma}\newpage
\include{DankLieA}\newpage
\include{NASOSS16}\newpage
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\cleardoublepage
\phantomsection
\addcontentsline{toc}{section}{Literaturverzeichnis}
\bibliographystyle{amsalpha}\bibliography{pub,Skr}
\cleardoublepage
\phantomsection
\addcontentsline{toc}{section}{Index}
\printindex
\end{document}