ciao
grazie per la pazienza. Ecco il preambolo completo
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\usepackage[italian]{babel}
\usepackage[latin1]{inputenc}
\usepackage{amsmath, amssymb}
\usepackage{fancyhdr}
\usepackage[babel]{csquotes}
\usepackage[style=authortitle, citestyle=verbose-trad1, babel=hyphen]{biblatex}
\bibliography{bibliotesi}
\usepackage{graphicx}
\usepackage{chngcntr}
\usepackage{aracne}
\pagestyle{fancy}
\renewcommand{\chaptermark}[1]{\markboth{#1}{}}
\renewcommand{\sectionmark}[1]{\markright{#1}}
\setcounter{secnumdepth}{0}
\setcounter{tocdepth}{5}
\newcommand{\1}{${}$\quad \enspace}
\newcommand{\appu}[1]{\marginpar{{\scriptsize #1}}}
\newcommand{\ms}{\textsc}
\newenvironment{cit}
{\begin{quotation}\footnotesize}
{\end{quotation}}
%
\newenvironment{zit}
{\begin{quote}\footnotesize}
{\end{quote}}
%
\newenvironment{sistema}
{\left\lbrace\begin{array}{@{}l@{}}}%
{\end{array}\right.}
%
\newcommand{\av}{\guillemotleft}
\newcommand{\di}{\guillemotright}
%
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\fancyhead[RE,LO]{\nouppercase{\leftmark}}
\fancyhead[RO,LE]{\thepage}
\fancyfoot{}
\nocite{*}
\counterwithin*{footnote}{chapter}
\begin{document}