\documentclass[11pt,a4paper]{article}
\usepackage{isabelle,isabellesym}
%begin adding
%\usepackage{pdfsetup}
\usepackage{fancyhdr}
\usepackage{beamerarticle}
\usepackage[english]{babel}
%\usepackage{enumitem}
\usepackage{enumerate}
\usepackage{cases}
%\usepackage{CJK,cjknumb}
%\usepackage{pgf,pgfarrows,pgfnodes,pgfautomata,pgfheaps,pgfshade}
\usepackage{amsmath,amssymb}
%\usepackage[latin1]{inputenc}
%\usepackage{colortbl}
\usepackage{tikz}
\usetikzlibrary{arrows,automata,decorations,fit,calc}
\usetikzlibrary{shapes,shapes.arrows,snakes,positioning}
\usepgflibrary{shapes.misc} % LATEX and plain TEX and pure pgf
\usetikzlibrary{matrix}
\usepackage[latin1]{inputenc}
\usepackage{verbatim}
\usepackage{romannum}
\usepackage{makeidx}
\usepackage{listings}
%end adding
% further packages required for unusual symbols (see also
% isabellesym.sty), use only when needed

%\usepackage{amssymb}
  %for \<leadsto>, \<box>, \<diamond>, \<sqsupset>, \<mho>, \<Join>,
  %\<lhd>, \<lesssim>, \<greatersim>, \<lessapprox>, \<greaterapprox>,
  %\<triangleq>, \<yen>, \<lozenge>

%\usepackage[greek,english]{babel}
  %option greek for \<euro>
  %option english (default language) for \<guillemotleft>, \<guillemotright>

%\usepackage[only,bigsqcap]{stmaryrd}
  %for \<Sqinter>

%\usepackage{eufrak}
  %for \<AA> ... \<ZZ>, \<aa> ... \<zz> (also included in amssymb)

%\usepackage{textcomp}
  %for \<onequarter>, \<onehalf>, \<threequarters>, \<degree>, \<cent>,
  %\<currency>

% this should be the last package used
\usepackage{pdfsetup}

% urls in roman style, theory text in math-similar italics
\urlstyle{rm}
\isabellestyle{it}

% for uniform font size
%\renewcommand{\isastyle}{\isastyleminor}
\newcommand{\wuhao}{\fontsize{6pt}{10pt}\selectfont}    % ÎåºÅ, µ¥±¶Ðоà

\begin{document}

\title{utm}
\author{By xujian}
\maketitle

\tableofcontents

% sane default for proof documents
\parindent 0pt\parskip 0.5ex

% generated text of all theories
\input{session}

% optional bibliography
%\bibliographystyle{abbrv}
%\bibliography{root}

\end{document}

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%%% mode: latex
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