小编Dav*_*one的帖子

我是初学者。我正在尝试使用数学Jax构建表，但无法编译。如何添加表格？

\begin{center}
    \begin{tabular}{ | m{7em} | m{5em}| m{9em} | } 
            \hline
        Set & operation & Identity \\ 
            \hline
        \(\mathbb{Z}\) & \(+\) & \(0\)    \\
            \hline
        \(\mathbb{Q}\) & \(+\) & \(0\)    \\
            \hline
        \(\mathbb{R}\) & \(+\) & \(0\)    \\ 
            \hline

        \(\mathbb{Z}\) & \(\times \) & \(0\)    \\
            \hline
        \(\mathbb{Q}\) & \(\times\) & \(0\)    \\
            \hline
        \(\mathbb{R}\) & \(\times\) & \(0\)    \\ 
            \hline
    \end{tabular}
\end{center}