如何在公式的数字旁边添加“星号”符号？

Question

如何在公式的数字旁边添加“星号”，例如

y=x+z....（8*）

谢谢

Answer 1

以下内容或许可以帮助你入门：

\documentclass{article}
\usepackage{amsmath}
\begin{document}

First version: the same equation number, but without the asterisk DOES NOT exist

\begin{equation}
a + b = c \label{eq:abc1}
\end{equation}

\begin{equation}
y = x + z  \refstepcounter{equation}\tag{\theequation*} \label{eq:yxz1}
\end{equation}

\begin{equation}
d + e = f \label{eq:def1}
\end{equation}

\ref{eq:abc1}

\ref{eq:yxz1}

\ref{eq:def1}


Second version: the same equation number, but without the asterisk DOES exist

\begin{equation}
a + b = c \label{eq:abc2}
\end{equation}

\begin{equation}
y = x + z  \tag{\theequation*} \label{eq:yxz2}
\end{equation}

\begin{equation}
d + e = f \label{eq:def2}
\end{equation}

\ref{eq:abc2}

\ref{eq:yxz2}

\ref{eq:def2}

\end{document}