在Latex中对每个等式线进行编号

时间:2015-02-17 15:02:18

标签: latex multiline

有没有办法用单独的子索引标记多行方程的每一行?

例如,我想获得类似(在输出中)

a = b(1.23.1)

c = d(1.23.2)

= f(1.23.3)

然后能够参考整个多线方程(“见于1.23 bla bla bla ...”)或特定线(“在1.23.3中我们重新定义了d ......”)。 / p>

1 个答案:

答案 0 :(得分:1)

对于任何想要此查询答案的人,这是一个有用的tex.stackexchange答案:https://tex.stackexchange.com/questions/118086/numbering-all-lines-of-an-array

要点如下:

%% in your preable
\usepackage{amsmath}

%% in your document
\begin{subequations}
\begin{align}
% YOUR MULTILINE MATHEMATICS WITH & ALIGNMENT CHARACTERS AND \\ NEWLINE MARKERS
% place \label{THIS-LINE} on each line, and you can cross-reference the line using \ref{THIS-LINE}
\end{align}
% place a \label{WHOLE-THING} here, and you can cross-reference the whole thing using \ref{WHOLE-THING}
\end{subequations}

这是一个例子:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}

\begin{document}

\begin{subequations}
\begin{align}
\frac{\mathrm{d} x}{\mathrm{d} t} &=\sigma(y-x)\label{eqn:line-1} \\
\frac{\mathrm{d} y}{\mathrm{d} t} &=x(\rho-z)-y\label{eqn:line-2} \\
\frac{\mathrm{d} z}{\mathrm{d} t} &=x y-\beta z
\end{align}
\label{eqn:all-lines}
\end{subequations}

Look at the first line \ref{eqn:line-1}, and now look at the second line \ref{eqn:line-2}. They are both part of the whole system \ref{eqn:all-lines}.

\end{document}

Multiline mathematics with each line labelled as number+letter and cross-referencing for each line and the whole system