\documentclass{amsart}

% The following AMS packages are automatically loaded with amsart 
% documentclass:
%\usepackage{amsmath}
%\usepackage{amssymb}
%\usepackage{amsthm}

% To put source file link in headers.
% Change "introduction.tex" to "this_filename.tex"
\usepackage{fancyhdr}
\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{Source file: \url{src/introduction.tex}}
\lfoot{}
\cfoot{\thepage}
\rfoot{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\renewcommand{\headheight}{12pt}

% Hyperref package for hypertext links:
% Change ?? in \hyperbaseurl{??}
\usepackage{hyperref}

\newtheorem{theorem}{Theorem}[subsection]
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{lemma}[theorem]{Lemma}

\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\newtheorem{exercise}[theorem]{Exercise}
\newtheorem{situation}[theorem]{Situation}

\theoremstyle{remark}
\newtheorem{remark}[theorem]{Remark}
\newtheorem{remarks}[theorem]{Remarks}

\numberwithin{equation}{subsection}

\begin{document}

\title{Introduction to the Algebraic Stacks Documents}

%\begin{abstract}
%\end{abstract}

\maketitle
\thispagestyle{fancy}

\section{Overview} \label{section-overview}

\noindent
This is the start of a long journey. Another such journey occurs
in the book by Laumon and Moret-Bailley, see \cite{LM-B}.

\bibliography{my}
\bibliographystyle{alpha}

\end{document}
