Equation Numbering and Referencing in MathJax

Yao Yao on September 18, 2014

1. Equation Numbering

1.1 Automatically

See Automatic Equation Numbering

1.2 Manually

根据 Automatic Equation Numbering 说的:

and \tag{} can be used to override the usual equation number with your own symbol instead.

那我们用 \tag{} 就好了。比如:

\begin{equation}
	Y \approx \beta_0 + \beta_1 X
	\tag{1.1}
\end{equation}

效果是:

2. Equation Referencing

\label{}\ref{}。类比一下:

  • \label{xxx} 就是 <a name="xxx"></a>
  • \ref{xxx} 就是 <a href="#xxx"></a>

比如:

\begin{equation}
	Y \approx \beta_0 + \beta_1 X
	\tag{1.1}
	\label{eq1.1}
\end{equation}

显示效果没有变化:

但是现在可以通过 \ref{} 来生成一个 Anchor:

According to $ \ref{eq1.1} $, we have ...

效果是:

According to $ \ref{eq1.1} $, we have …

如果想让公式编号自带括号的话,可以用 amsmath package 的 \eqref{}:

According to $ \eqref{eq1.1} $, we have ...

效果是:

According to $ \eqref{eq1.1} $, we have …



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