带有具体编号的章节标题

Question

我想知道如何才能让数字 9 出现在乳胶中的章节中？

到目前为止，我的标题代码

\documentclass{report}

\begin{document}

\chapter{Polarity,\\ and blocking and \\anti-blocking polyhedra
}

\end{document}

Answer 1

\documentclass{report}

\setcounter{chapter}{8}
\renewcommand{\chaptername}{}
\begin{document}
\tableofcontents

\chapter{Polarity, and blocking and anti-blocking polyhedra}

\end{document}