```
%-----------------------------------------------------------------------
% Beginning of jams-l-template.tex
%-----------------------------------------------------------------------
%
% This is a topmatter template file for JAMS for use with AMS-LaTeX.
%
% Templates for various common text, math and figure elements are
% given following the \end{document} line.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Remove any commented or uncommented macros you do not use.
\documentclass{jams-l}
% If you need symbols beyond the basic set, uncomment this command.
%\usepackage{amssymb}
% If your article includes graphics, uncomment this command.
%\usepackage{graphicx}
% If the article includes commutative diagrams, ...
%\usepackage[cmtip,all]{xy}
% Update the information and uncomment if AMS is not the copyright
% holder.
%\copyrightinfo{2009}{American Mathematical Society}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\theoremstyle{definition}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\newtheorem{xca}[theorem]{Exercise}
\theoremstyle{remark}
\newtheorem{remark}[theorem]{Remark}
\numberwithin{equation}{section}
\begin{document}
% \title[short text for running head]{full title}
\title{}
% Only \author and \address are required; other information is
% optional. Remove any unused author tags.
% author one information
% \author[short version for running head]{name for top of paper}
\author{}
\address{}
\curraddr{}
\email{}
\thanks{}
% author two information
\author{}
\address{}
\curraddr{}
\email{}
\thanks{}
% \subjclass is required.
\subjclass[2020]{Primary }
\date{}
\dedicatory{}
% Abstract is required.
\begin{abstract}
\end{abstract}
\maketitle
% Text of article.
% Bibliographies can be prepared with BibTeX using amsplain,
% amsalpha, or (for "historical" overviews) natbib style.
\bibliographystyle{amsplain}
% Insert the bibliography data here.
\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Templates for common elements of a journal article; for additional
% information, see the file Author_Handbook_Journals.pdf, included
% in the JAMS author package, and the amsthm user's guide, linked
% from http://www.ams.org/tex/amslatex.html .
% Section headings
\section{}
\subsection{}
% Ordinary theorem and proof
\begin{theorem}[Optional addition to theorem head]
% text of theorem
\end{theorem}
\begin{proof}[Optional replacement proof heading]
% text of proof
\end{proof}
% Figure insertion; default placement is top; if the figure occupies
% more than 75% of a page, the [p] option should be specified.
\begin{figure}
\includegraphics{filename}
\caption{text of caption}
\label{}
\end{figure}
% Mathematical displays; for additional information, see the amsmath
% user's guide, linked from http://www.ams.org/tex/amslatex.html .
% Numbered equation
\begin{equation}
\end{equation}
% Unnumbered equation
\begin{equation*}
\end{equation*}
% Aligned equations
\begin{align}
& \\
&
\end{align}
%-----------------------------------------------------------------------
% End of jams-l-template.tex
%-----------------------------------------------------------------------
```