如何在 \newtheorem (定义) 中添加一个点？

Question

您好，请给我一个想法，在定义数字后立即添加点？

我的 MWE 是：

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amssymb}
\usepackage{amsthm}

\theoremstyle{definition}
\newtheorem{definition}{Definition}[section]

\begin{document}

\section{Introduction}

\theoremstyle{definition}
\begin{definition}[something]
A fibration is a mapping between two topological spaces that has the homotopy lifting property for every space $X$.
\end{definition}
\end{document}

Answer 1

按照评论中 Bernard 的建议，您可以使用 thmtools 样式键来执行此操作headformat。

\documentclass{article}

\usepackage{amsthm,thmtools}

\declaretheoremstyle[
  headformat={\NAME\ \NUMBER.\NOTE\,},
  headpunct={},
  notefont=\bfseries,
  spaceabove=\topsep,
  spacebelow=\topsep
  ]{mydefstyle}

\declaretheorem[
  style=mydefstyle,
  parent=section
  ]{definition}

\begin{document}

\section{Introduction}

\begin{definition}[something]
A fibration is a mapping between two topological spaces that has the homotopy lifting property for every space $X$.
\end{definition}

\begin{definition}
A fibration is a mapping between two topological spaces that has the homotopy lifting property for every space $X$.
\end{definition}

\end{document}