\documentclass[a4paper,11pt,titlepage]{book}
\usepackage[italian]{babel}
\usepackage{fancyhdr}
\usepackage{amsmath,amssymb}
\usepackage{amscd}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\begin{document}
ciao
\end{document}