我的 LaTeX 如下所示（我省略了一些内容）：
\documentclass{amsbook}
\usepackage{fancyhdr,etoolbox,multicol,tabulary,booktabs,mathtools}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE,RO]{\thepage}
\fancyhead[LO]{\nouppercase\rightmark}
\fancyhead[RE]{\nouppercase\leftmark}
\newcommand{\set}{\mathsf{Set}}
\newcommand{\grp}{\mathsf{Gr}}
\newcommand{\ab}{\mathsf{Ab}}
\newcommand{\grd}{\mathsf{Grpd}}
\newcommand{\ring}{\mathsf{Ring}}
\renewcommand{\contentsname}{Table of contents}
\makeatletter
\patchcmd{\@tocline}
{\hfil}
{\leaders\hbox{\,.\,}\hfil}{}{}
\makeatother
\begin{document}
\pagestyle{plain}
\frontmatter
\title{\textsc{AAAZZZ}}
\author{LZ}
\maketitle
\chapter*{Abstract}
The goal of this notes is to describe \ldots
\chapter*{List of Abbreviations and Symbols}
Below we list some abbreviations and symbols we will use.
\begin{table}[h!]
\caption{Table of Abbreviations}
\begin{tabular}{c || c}
\hline
Abbreviation & Meaning \\ [0.5ex] % inserts table %heading
\hline\hline
$\set$ & the category of sets\\
$\grp$ & the category of all (nice) topological spaces\\
$\ab$ & the category of schemes\\ [1ex]
\hline
\end{tabular}
\label{tab:abbr}
\end{table}
\vspace{2cm}
\begin{table}[h!]
\caption{Table of Symbols}
\begin{tabular}{c || c}
\hline
Symbol & Meaning \\
\hline\hline
$\cong$ & isomorphism\\ [1ex]
\hline
\end{tabular}
\label{tab:symb}
\end{table}
\tableofcontents
\mainmatter
\cleardoublepage
\pagenumbering{arabic}
\pagestyle{fancy}
\chapter{Preliminaries on A}
\chapter{Results on Z}
\appendix
\chapter{More results on Z}
\backmatter
\begin{thebibliography}{10}
\end{thebibliography}
\end{document}
问题是，未编号章节的标题“缩写和符号列表”没有出现在页面顶部——它是垂直居中的，我认为这很丑陋。如何让它出现在页面顶部，并且让两个表格直接一个接一个地出现在那里？我以为这很简单，但我不知道该怎么做。