如何使用 LyX 2.3.0 安装子方程模块

Question

模块就像 LyX 的“插件”。您可以在 LyX 用户指南（转到帮助 > 用户指南）第 3.1.2.3 节“模块”中阅读有关它们的更多信息。您可以在数学手册第 19.3 节“子编号”中阅读有关子方程的具体内容。

要“加载”子方程模块，请转到“文档”>“设置”>“模块”，找到并单击“子方程”，单击“添加”，然后单击“确定”。请参阅此处的屏幕截图：

加载后，您可以通过前往“插入”>“自定义插入”>“子方程”来插入子方程：

在子方程插入图中，您可以针对要输入的每个子方程转到“插入”>“数学”>“编号公式”。遗憾的是，在 LyX 2.4.0 之前的版本中，LyX 显示不会显示正确的编号。例如，如果您有两个子方程，LyX 将显示 (1) 和 (2) 作为标签，而不是 (1a) 和 (1b)。PDF 输出将具有正确的标签。在从 2.4.0 开始的 LyX 版本中，LyX 显示将是正确的。

有关子方程的更多信息，请参阅帮助 > 数学。

注意，您需要将模块添加到每个文档中。如果您希望始终加载子方程式模块，您可以转到文档设置并单击“另存为文档默认值”。

以下是 LyX 注释中给出的说明的示例文件：

#LyX 2.3 created this file. For more info see http://www.lyx.org/
\lyxformat 544
\begin_document
\begin_header
\save_transient_properties true
\origin unavailable
\textclass article
\use_default_options true
\begin_modules
subequations
\end_modules
\maintain_unincluded_children false
\language english
\language_package default
\inputencoding auto
\fontencoding global
\font_roman "default" "default"
\font_sans "default" "default"
\font_typewriter "default" "default"
\font_math "auto" "auto"
\font_default_family default
\use_non_tex_fonts false
\font_sc false
\font_osf false
\font_sf_scale 100 100
\font_tt_scale 100 100
\use_microtype false
\use_dash_ligatures true
\graphics default
\default_output_format default
\output_sync 1
\bibtex_command default
\index_command default
\paperfontsize default
\spacing single
\use_hyperref false
\papersize default
\use_geometry false
\use_package amsmath 1
\use_package amssymb 1
\use_package cancel 1
\use_package esint 1
\use_package mathdots 1
\use_package mathtools 1
\use_package mhchem 1
\use_package stackrel 1
\use_package stmaryrd 1
\use_package undertilde 1
\cite_engine basic
\cite_engine_type default
\biblio_style plain
\use_bibtopic false
\use_indices false
\paperorientation portrait
\suppress_date false
\justification false
\use_refstyle 1
\use_minted 0
\index Index
\shortcut idx
\color #008000
\end_index
\secnumdepth 3
\tocdepth 3
\paragraph_separation indent
\paragraph_indentation default
\is_math_indent 0
\math_numbering_side default
\quotes_style english
\dynamic_quotes 0
\papercolumns 1
\papersides 1
\paperpagestyle default
\tracking_changes false
\output_changes false
\html_math_output 0
\html_css_as_file 0
\html_be_strict false
\end_header

\begin_body

\begin_layout Standard
\begin_inset Note Note
status open

\begin_layout Plain Layout
Steps:
\end_layout

\begin_layout Plain Layout
1.
 Go to Document > Settings > Modules and add the 
\begin_inset Quotes eld
\end_inset

Subequations
\begin_inset Quotes erd
\end_inset

 module.
\end_layout

\begin_layout Plain Layout
2.
 Then go to Insert > Custom Insets > Subequations.
\end_layout

\begin_layout Plain Layout
3.
 Inside the subequations inset, go to Insert > Math > Numbered Formula and
 write some math.
 You should get the following:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Flex Subequations
status open

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
E=mc^{2}
\end{equation}

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Note
status open

\begin_layout Plain Layout
4.
 Place the cursor inset the Subequations inset to the far right (e.g., put
 the cursor to the right of the inset and press <Left>).
\end_layout

\begin_layout Plain Layout
5.
 Press <Return>.
\end_layout

\begin_layout Plain Layout
6.
 Go to Insert > Math > Numbered Formula and write some math.
 You should get the following:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Flex Subequations
status open

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
E=mc^{2}
\end{equation}

\end_inset


\end_layout

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
1+2=3
\end{equation}

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Note
status open

\begin_layout Plain Layout
The PDF output should be correct, but the LyX display is not correct.
 If you want to show 
\begin_inset Quotes eld
\end_inset

a
\begin_inset Quotes erd
\end_inset

 and 
\begin_inset Quotes eld
\end_inset

b
\begin_inset Quotes erd
\end_inset

 in the LyX display (although the numbers may still be incorrect), do the
 following:
\end_layout

\begin_layout Plain Layout
7.
 Go to Tools > Preferences > Look & Feel > Display and for 
\begin_inset Quotes eld
\end_inset

Instant preview
\begin_inset Quotes erd
\end_inset

 set it to 
\begin_inset Quotes eld
\end_inset

On
\begin_inset Quotes erd
\end_inset

.
\end_layout

\begin_layout Plain Layout
8.
 Place the cursor to the left of the Subequations inset, and press <Shift>
 + <Right> to select the entire inset from the outside.
\end_layout

\begin_layout Plain Layout
9.
 Go to Insert > Preview.
 You should get the following:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Preview

\begin_layout Standard
\begin_inset Flex Subequations
status open

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
E=mc^{2}
\end{equation}

\end_inset


\end_layout

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
1+2=3
\end{equation}

\end_inset


\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Note
status open

\begin_layout Plain Layout
Note that the numbers are incorrect, but at least now there is an 
\begin_inset Quotes eld
\end_inset

a
\begin_inset Quotes erd
\end_inset

 and a 
\begin_inset Quotes eld
\end_inset

b
\begin_inset Quotes erd
\end_inset

.
\end_layout

\end_inset


\end_layout

\end_body
\end_document

Answer 1