☰

等式拒绝向左移动，超过第一行

tag-icon • tag-icon horizontal-alignment align margins subequations
等式拒绝向左移动，超过第一行

我想人们已经问过这个问题了，但是：

我有一个非常长的多行方程，在一个align环境里面，又在一个环境里面subequation。

方程的每一行都太长了，方程和方程行号都放不进一行。所以，我想将整个多行方程向左移动一点，比文本的左边缘更靠左。然而，方程只会忽略左边距，将第一行向左移动。方程中的任何其他行都会与文本的左边缘对齐。

我们应该如何告诉 LaTeX 将整个等式向左移动而忽略左边距？

具体来说，\hspace{-5in}nor\hspace*{-5in}都不起作用。

以下是等式的前两行：（原始等式有 10 多行，因此）

\documentclass[11pt, oneside]{article}
\usepackage{geometry}
\geometry{letterpaper}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{amsmath}

\begin{document}

\begin{subequations}
\begin{align}
\hspace*{-20cm}
\langle\tilde{\Theta}(\mathbf{l_1})...\tilde{\Theta}{(\mathbf{l_4})}\rangle&=\langle
\Theta(\mathbf{l_1})
\Theta(\mathbf{l_2})
\Theta(\mathbf{l_3})
\Theta(\mathbf{l_4})\rangle\\
+(
\iint\frac{d^2\mathbf{l_1'}d^2\mathbf{l_2'}}{(2\pi)^4}&\langle
\Theta(\mathbf{l_3})
\Theta(\mathbf{l_4})
\Theta(\mathbf{l_1'})
\Theta(\mathbf{l_2'})
\phi(\mathbf{l_1}-\mathbf{l_1'})
\phi(\mathbf{l_2}-\mathbf{l_2'})\rangle
[(\mathbf{l_1}-\mathbf{l_1'})\cdot \mathbf{l_1'}] 
[(\mathbf{l_2}-\mathbf{l_2'})\cdot \mathbf{l_2'}]
\end{align}
\end{subequations}

\end{document}

答案1

在此处输入图片描述

\adjustwidth您可以在本地使用包中的环境扩大文本宽度changepage，并将方程式向左移动并在宽环境中居中：

    \documentclass[11pt, oneside]{article}
    \usepackage[showframe]{geometry}
    \geometry{letterpaper}
    \usepackage[utf8]{inputenc}
    \usepackage[T1]{fontenc}
    \usepackage[english]{babel}
    \usepackage{amsmath}

    \usepackage[strict]{changepage}

    \begin{document}

    \begin{adjustwidth}{-1em}{}
    \begin{subequations}
    \begin{align}
    \langle\tilde{\Theta}(\mathbf{l_1})...\tilde{\Theta}{(\mathbf{l_4})}\rangle&=\langle
    \Theta(\mathbf{l_1})
    \Theta(\mathbf{l_2})
    \Theta(\mathbf{l_3})
    \Theta(\mathbf{l_4})\rangle\\
    +(
    \iint\frac{d^2\mathbf{l_1'}d^2\mathbf{l_2'}}{(2\pi)^4}&\langle
    \Theta(\mathbf{l_3})
    \Theta(\mathbf{l_4})
    \Theta(\mathbf{l_1'})
    \Theta(\mathbf{l_2'})
    \phi(\mathbf{l_1}-\mathbf{l_1'})
    \phi(\mathbf{l_2}-\mathbf{l_2'})\rangle
    [(\mathbf{l_1}-\mathbf{l_1'})\cdot \mathbf{l_1'}]
    [(\mathbf{l_2}-\mathbf{l_2'})\cdot \mathbf{l_2'}]
    \end{align}
    \end{subequations}
    \end{adjustwidth}

    \begin{adjustwidth}{-2em}{}
    \begin{equation}
    \begin{multlined}
    \langle\tilde{\Theta}(\mathbf{l_1}) \dots \tilde{\Theta}{(\mathbf{l_4})}\rangle
    = \langle
        \Theta(\mathbf{l_1})\Theta(\mathbf{l_2})\Theta(\mathbf{l_3})\Theta(\mathbf{l_4})
      \rangle\\
    +(
    \iint\frac{d^2\mathbf{l_1'}d^2\mathbf{l_2'}}{(2\pi)^4}
    \langle
        \Theta(\mathbf{l_3})\Theta(\mathbf{l_4})\Theta(\mathbf{l_1'})\Theta(\mathbf{l_2'})
    \phi(\mathbf{l_1}-\mathbf{l_1'})\phi(\mathbf{l_2}-\mathbf{l_2'})
    \rangle
    [(\mathbf{l_1}-\mathbf{l_1'})\cdot \mathbf{l_1'}]
    [(\mathbf{l_2}-\mathbf{l_2'})\cdot \mathbf{l_2'}]
    \end{multlined}
    \end{equation}
    \end{adjustwidth}
    \end{document}

Note, so far I didn't see that part of one equations is numbered. See, if the use `multlined` is better suit to what you like to have.

\documentclass[11pt, oneside]{article}
\usepackage[showframe]{geometry}
\geometry{letterpaper}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{mathtools}

\usepackage[strict]{changepage}

\begin{document}

\begin{adjustwidth}{-1em}{-1em}
\begin{subequations}
\begin{align}
\langle\tilde{\Theta}(\mathbf{l_1})...\tilde{\Theta}{(\mathbf{l_4})}\rangle&=\langle
\Theta(\mathbf{l_1})
\Theta(\mathbf{l_2})
\Theta(\mathbf{l_3})
\Theta(\mathbf{l_4})\rangle\\
+(
\iint\frac{d^2\mathbf{l_1'}d^2\mathbf{l_2'}}{(2\pi)^4}&\langle
\Theta(\mathbf{l_3})
\Theta(\mathbf{l_4})
\Theta(\mathbf{l_1'})
\Theta(\mathbf{l_2'})
\phi(\mathbf{l_1}-\mathbf{l_1'})
\phi(\mathbf{l_2}-\mathbf{l_2'})\rangle
[(\mathbf{l_1}-\mathbf{l_1'})\cdot \mathbf{l_1'}]
[(\mathbf{l_2}-\mathbf{l_2'})\cdot \mathbf{l_2'}]
\end{align}
\end{subequations}
\end{adjustwidth}

\begin{adjustwidth}{-1em}{-1em}
\begin{equation}
\begin{multlined}
\langle
    \tilde{\Theta}(\mathbf{l_1}) \dots \tilde{\Theta}(\mathbf{l_4})
\rangle
= \langle
    \Theta(\mathbf{l_1})\Theta(\mathbf{l_2})\Theta(\mathbf{l_3})\Theta(\mathbf{l_4})
  \rangle\\
+(
\iint\frac{d^2\mathbf{l_1'}d^2\mathbf{l_2'}}{(2\pi)^4}
\langle
    \Theta(\mathbf{l_3})\Theta(\mathbf{l_4})\Theta(\mathbf{l_1'})\Theta(\mathbf{l_2'})
\phi(\mathbf{l_1}-\mathbf{l_1'})\phi(\mathbf{l_2}-\mathbf{l_2'})
\rangle
[(\mathbf{l_1}-\mathbf{l_1'})\cdot \mathbf{l_1'}]
[(\mathbf{l_2}-\mathbf{l_2'})\cdot \mathbf{l_2'}]
\end{multlined}
\end{equation}
\end{adjustwidth}
\end{document}

另一种可能性是使用较小的字体来表示这个等式。

答案2

尝试使用\begin{flalign}...\end{flalign}软件包自带的amsmath.sty

相关内容