Aggiungo un’altra cosa: è alquanto scorretto fare la stessa domanda in due forum contemporaneamente. È anche poco saggio non fornire tutte le informazioni necessarie.
Già che ci sono ti mostro una versione umanizzata del tuo documento:
`\documentclass[10pt,a4paper,oneside,fleqn]{book}
\usepackage[italian,german,english]{babel}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage[centertags]{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{float}
\usepackage{geometry}
\geometry{verbose,a4paper,top=2.0cm,bottom=2.0cm,left=2.0cm,right=2.0cm}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage{emptypage}
\usepackage[titles]{tocloft}
\setlength{\cftbeforechapskip}{6pt}
\setlength{\cftbeforesecskip}{6pt}
\setlength{\cftbeforesubsecskip}{3pt}
\def\listofsymbols{\input{symbols} \clearpage}
\def\addsymbol #1: #2#3{$#1$ \> \parbox{6.5in}{#2 \dotfill \pageref{#3}}\\}
\def\newnot#1{\label{#1}}
\makeatletter
\renewcommand\chapter{\if@openright\cleardoublepage\else\clearpage\fi
\thispagestyle{fancy}%
\global\@topnum\z@
\@afterindentfalse
\secdef\@chapter\@schapter}
\newenvironment{abstract}[2]
{\cleardoublepage\thispagestyle{fancy}
\renewcommand{\abstractname}{#1}
\selectlanguage{#2}}
\vspace*{\fill}
\begin{center}
\bfseries\Large\MakeUppercase\abstractname
\end{center}}
{\par\vfill}
\usepackage{etoolbox}
\addto\captionsenglish{\renewcommand{\bibname}{REFERENCES}}
\makeatletter
\def\@biblabel#1{#1.}
\makeatother
\patchcmd{\thebibliography}{\advance\leftmargin\labelsep}
{\labelsep=0.7cm \advance\leftmargin\labelsep}{}{}
\pretocmd{\thebibliography}{%
\cleardoublepage
\phantomsection
\addcontentsline{toc}{chapter}{\bibname}%
\raggedright}{}{}
\begin{document}
\begin{titlepage}
\input{Title}
\end{titlepage}
\frontmatter
\begin{abstract}{italian}{SOMMARIO}
\normalsize\emph{Tanto va la gatta al largo che ci lascia lo zampino}
\end{abstract}
\begin{abstract}{german}{ZUSAMMENFASSUNG}
\normalsize\emph{Wenn die Katze geht zu viel zu verraten, kann verlor seine kleine Hand}
\end{abstract}
\begin{abstract}{english}{ABSTRACT}
\normalsize\emph{If the cat goes too much away, can lost its little hand}
\end{abstract}
\tableofcontents
\chapter*{LIST OF SYMBOLS}
\listofsymbols
\mainmatter
\setcounter{secnumdepth}{-1}
\include{Introduction}
\setcounter{secnumdepth}{3}
\include{Chapter1}
\setcounter{secnumdepth}{-1}
\include{Conclusions}
\setcounter{secnumdepth}{1}
\cleardoublepage
\bibliographystyle{phdpisa5}
\bibliography{References}
\end{document}`
Senza tanti \bf\Large e \vspace{-20pt} che sono terrificanti. Anche altre cose lo erano.
Ciao
Enrico