示例编号和引用

示例编号和引用

我对 LateX 还不太熟悉,我需要帮助完成我的学士论文。我正在写一篇数学论文,里面有很多例子,我需要标注和引用我的例子。

我给你举一个例子,我到底需要什么:

\chapter{chapter_name}
some text
\section{section_name}
some text
%dunno how to get this number and reference here
\textbf{Example chapter_number.section_number.example_number:} \\
$Here is some mothematical example$\\
\\
...
%dont know how to reference the example
In example chapter_number.section_number.example_number we can find ...

我尝试了 \label 和 \ref,但它只是引用了章节而不是示例。

答案1

将其example视为定理结构。您可以轻松地使用该ntheorem包执行您想要的操作:您要求的是  break此包中的样式。我添加了该cleveref包以便更有效地管理交叉引用(例如,如果您的一些示例后来成为注释,您将不必去追逐所有出现的“example”一词,以将其中一些替换为“remark”):

\documentclass{report}%]

\usepackage[utf8]{inputenc}%
\usepackage[T1]{fontenc}

\usepackage{amsmath}
\usepackage[thmmarks, amsmath, framed]{ntheorem}%
\usepackage{cleveref}

\theoremstyle{break}
\theoremheaderfont{\bfseries}
\theorembodyfont{\mdseries}
\theoremseparator{\smallskip }

\newtheorem{example}{Example}[section]

\begin{document}

\chapter{An Interesting Chapter}

\section{A First Section}

\begin{example}[Title] \label{ex-a}
This is the first example. The counter will be reset at each section.
\end{example}

\begin{example}[Title the Second]\label{ex-b}
This is the second example of the first section. It’s the continuation and development of \cref {ex-a}.
\end{example}

\section{Another Section}

\begin{example}[Title title]\label{ex-c}
This is the first example of the second section, referring to \cref{ex-b}. The counter was reset.
\end{example}

\end{document} 

在此处输入图片描述

答案2

新定理正好满足了我的需要。首先我创建了定理:

\newtheorem{mydef}{Example}[section]

那么我的例子看起来就像这样

\begin{mydef}
\label{example:math}
$Mathematical examlpe$
\end{mydef}

In example \ref{example:math} we can find ...

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