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对文档中该点最内层分段环境中的定理进行编号？

tag-icon • tag-icon numbering theorems counters
对文档中该点最内层分段环境中的定理进行编号？

以下是我想要实现的目标：

第 1 章
。...
定理 1.1。...
第
1.1 节
。...
定理 1.1.1。...
第
1.1.1 小节。...
定理
1.1.1.1。

这有可能吗？如果可能的话，怎么做？...

答案1

使用etoolbox包裹您可以修补分段命令（\chapter、\section、\subsection、 ...）以重新定义计数器的工作方式theorem。theorem通过以下方式在每个分段单元重置计数器\@addtoreset，尽管也可以使用chngcntr包裹）下面是一个可以工作的最小示例，它正是这样做的：

\documentclass{book}
\usepackage{etoolbox}% http://ctann.org/pkg/etoolbox
\newtheorem{theorem}{Theorem}

% Modify theorem counter to match that of the section unit
\preto{\chapter}{\renewcommand{\thetheorem}{\thechapter.\arabic{theorem}}}%
\preto{\section}{\renewcommand{\thetheorem}{\thesection.\arabic{theorem}}}%
\preto{\subsection}{\renewcommand{\thetheorem}{\thesubsection.\arabic{theorem}}}%

% Reset the counter at every sectional unit
\makeatletter
\@addtoreset{theorem}{chapter}
\@addtoreset{theorem}{section}
\@addtoreset{theorem}{subsection}
\makeatother

\begin{document}

\chapter{First chapter}
\begin{theorem} This is a theorem \end{theorem}
\section{First section}
\begin{theorem} This is a theorem \end{theorem}
\subsection{First subsection}
\begin{theorem} This is a theorem \end{theorem}
\section{Second section}
\begin{theorem} This is a theorem \end{theorem}
\subsection{First subsection}
\begin{theorem} This is a theorem \end{theorem}
\begin{theorem} This is a theorem \end{theorem}
\subsection{Second subsection}
\begin{theorem} This is a theorem \end{theorem}

\end{document}

节同步定理

答案2

也许这可以帮助你……

\documentclass{scrbook}

\usepackage{etoolbox}
\usepackage{amsthm}
\newtheorem{theorem}{Theorem}

\makeatletter
% save current section numbering
\AtBeginEnvironment{theorem}{\edef\tmpsect{\@currentlabel}}
% reset theorem counter with all headings
\@addtoreset{theorem}{chapter}
\@addtoreset{theorem}{section}
\@addtoreset{theorem}{subsection}
% add current section numbering to theorem number
\renewcommand{\thetheorem}{\tmpsect-\arabic{theorem}}
\makeatother

\begin{document}
\chapter{Chapter}
\begin{theorem}
Text
\end{theorem}
\section{Section}
\begin{theorem}
Text
\end{theorem}
\section{Section}
\begin{theorem}
Text
\end{theorem}
\subsection{Subsection}
\begin{theorem}
Text
\end{theorem}
\section{Section}
\begin{theorem}
Text
\end{theorem}
\subsection{Subsection}
\begin{theorem}
Text
\end{theorem}
\section{Section}
\begin{theorem}
Text
\end{theorem}
\subsubsection{Subsubsection}
\begin{theorem}
Text
\end{theorem}
\section{Section}
\begin{theorem}
Text
\end{theorem}
\subsection{Subsection}
\begin{theorem}
Text
\end{theorem}
\end{document}

结果

如果没有，请尝试提供一个最小的工作示例并澄清您的问题。

笔记
表示\@currentlabel当前标签（哇...），可以是另一个标签，也可以是当前部分。但正如 egreg 所说，如果您不使用组外的标签（如{figure}），则不会有问题...

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