rename HOL-Multivariate_Analysis to HOL-Analysis.
\documentclass[11pt,a4paper]{article}
\usepackage{graphicx}
\usepackage{isabelle}
\usepackage{isabellesym}
\usepackage{latexsym}
\usepackage{textcomp}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[only,bigsqcap]{stmaryrd}
\usepackage{pdfsetup}
\urlstyle{rm}
\isabellestyle{it}
\pagestyle{myheadings}
\begin{document}
\title{Multivariate Analysis}
\maketitle
\tableofcontents
\begin{center}
\includegraphics[width=\linewidth]{session_graph}
\end{center}
\newpage
\renewcommand{\setisabellecontext}[1]{\markright{THEORY~``#1''}}
\parindent 0pt\parskip 0.5ex
\input{session}
\end{document}