main.tex

% 前言
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[margin = 1in]{geometry}
\usepackage[english]{babel}
\usepackage{fancyhdr}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{amsfonts}
% \usepackage{natbib}
\usepackage{graphicx}

\usepackage{hyperref}
\hypersetup{
    colorlinks=true,
    linkcolor=blue,
    filecolor=magenta,
    urlcolor=cyan,
}


\pagestyle{fancy}
\fancyhf{}
\lhead{}
\rhead{}
\lfoot{}
\rfoot{}
\cfoot{\thepage}

\newtheorem{problem}{Problem}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{theorem}{Theorem}[section]
\newtheorem{corollary}{Corollary}[section]
\newtheorem{remark}{Remark}[section]

\newcommand{\R}{\mathbb R}
\newcommand{\Z}{\mathbb Z}
\newcommand{\C}{\mathbb C}
\newcommand{\Q}{\mathbb Q}
\newcommand{\st}{\operatorname{s.t. }}

% \includeonly{}

\begin{document}

\title{enter title here}
\author{enter name here}
\date{\today}
\maketitle

\begin{abstract}
    what's this about

    contributions

    references

\end{abstract}

\tableofcontents


% \include{chapter1}

% \include{chapter2}

\section{enter first section here}

something something.


% \bibliographystyle{plain}
% \bibliography{references}
% \bibliography{}
\end{document}