`\documentclass[a4paper, twoside, 9pt]{article}
\usepackage{
amsmath,amssymb,amsfonts,
eucal,wrapfig,amsthm,
graphicx,hyperref,url,
mathrsfs}
\usepackage[utf8]{inputenc}
%\usepackage{mathptmx}
\usepackage{newtxtext,newtxmath}
\usepackage[LGRx,T1]{fontenc}
\usepackage{inconsolata}
\newcommand{\mono}{\hookrightarrow}
\newcommand{\epi}{\twoheadrightarrow}
\newcommand{\xto}[1]{\xrightarrow{#1}}
\newcommand{\xot}[1]{\xleftarrow{#1}}
\newcommand{\bsmat}{\left(\begin{smallmatrix}}
\newcommand{\esmat}{\end{smallmatrix}\right)}
\DeclareRobustCommand{\greco}[1]{%
{\fontencoding{LGR}\fontfamily{\greekfamily}\selectfont #1}}
\def\greekfamily{porson}
%=====================================
\let\amalg=\undefined
\let\coprod=\undefined
\DeclareSymbolFont{cmsymbols}{OMS}{cmsy}{m}{n}
\DeclareSymbolFont{cmlargesymbols}{OMX}{cmex}{m}{n}
\DeclareMathSymbol{\amalg}{\mathbin}{cmsymbols}{“71}
%=================================================
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage{epigraph}
\usepackage[titletoc]{appendix}
\DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it}
\newcommand{\com}[1]{\mathpzc{#1}}
\newcommand{\cate}[1]{\mathbf{#1}}
\newcommand{\C}{\cate{C}}
\newcommand{\fascio}[1]{\mathscr{#1}}
\usepackage{mparhack, microtype}
\hypersetup{backref,
colorlinks=true,
linkcolor=black,citecolor=NavyBlue}
\hyphenation{Gro-then-dieck}
\newcommand{\todo}[1]{\textcolor{blue}{\bf #1}}`
ho tolto un po’ di roba, i pacchetti che carico sono questi, in questo ordine…