\documentclass[12pt]{amsart}

\usepackage[margin=1in]{geometry}

\title{Your topic}
\author{Name 1}
\author{Name 2}

\begin{document}

\maketitle

\section{Introduction}

Sentence 1.

Next paragraph. $a=b$

Displayed equation:
\[
  a = b
\]

\section{Something}

\subsection{Else}

\begin{thebibliography}{99}

\bibitem{item1} Item 1

\bibitem{item2} Item 2
  
\end{thebibliography}

\end{document}
