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在 amsart 中的定理编号（交换）前放置一个星号

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在 amsart 中的定理编号（交换）前放置一个星号

我正在使用amsart交换定理数字的文档类（通过使用\swapnumbers），并且我想在数字前面用星号标记我的一些定理、引理、示例等，如 *4.5。定理以表明读者无需知道它们。有没有简单的方法可以做到这一点？

答案1

如果星号也出现在交叉引用中，那就简单了。

\documentclass{amsart}
\usepackage{etoolbox}

\swapnumbers
\newtheorem{theorem}{Theorem}
\numberwithin{theorem}{section}
\newenvironment{theorem*}
 {\preto{\thetheorem}{*}\theorem}
 {\endtheorem}

\begin{document}

\section{Title}

\begin{theorem}\label{easy}
This is an easy theorem.
\end{theorem}

\begin{theorem*}\label{hard}
The zeros of the zeta function have real part equal to $1/2$.
\end{theorem*}

Theorem~\ref{easy} is an easy consequence of theorem~\ref{hard}
a proof of which is too long for this short note.

\end{document}

在此处输入图片描述

交叉引用中没有星号的非破解版本允许在边缘处使用星号。

\documentclass{amsart}

\newtheoremstyle{swapped}%  <name>
  {\topsep}%                <space above>
  {\topsep}%                <space below>
  {\itshape}%               <body font>
  {}%                       <indent amount>
  {\bfseries}%              <theorem head font>
  {.}%                      <punctuation after theorem head>
  {.5em}%                   <space after theorem head>
  {\thmnumber{\textnormal{#2} }\thmname{#1}\thmnote{ (#3)}}% <theorem head spec>
\newtheoremstyle{starred}%  <name>
  {\topsep}%                <space above>
  {\topsep}%                <space below>
  {\itshape}%               <body font>
  {}%                       <indent amount>
  {\bfseries}%              <theorem head font>
  {.}%                      <punctuation after theorem head>
  {.5em}%                   <space after theorem head>
  {\thmnumber{\textnormal{\makebox[0pt][r]{*}#2} }\thmname{#1}\thmnote{ (#3)}}% <theorem head spec>

\theoremstyle{swapped}
\newtheorem{theorem}{Theorem}
\numberwithin{theorem}{section}

\theoremstyle{starred}
\newtheorem{theorem*}[theorem]{Theorem}

\begin{document}

\section{Title}

\begin{theorem}\label{easy}
This is an easy theorem.
\end{theorem}

\begin{theorem*}\label{hard}
The zeros of the zeta function have real part equal to $1/2$.
\end{theorem*}

Theorem~\ref{easy} is an easy consequence of theorem~\ref{hard}
a proof of which is too long for this short note.

\end{document}

在此处输入图片描述

相同的破解版本，可以避免\newtheoremstyle：

\documentclass{amsart}
\usepackage{etoolbox}

\swapnumbers
\newtheorem{theorem}{Theorem}
\numberwithin{theorem}{section}

\makeatletter
\newenvironment{theorem*}
 {\patchcmd\@thm{\csname}{\makebox[0pt][r]{*}\csname}{}{}\theorem}
 {\endtheorem}
\makeatother

\begin{document}

\section{Title}

\begin{theorem}\label{easy}
This is an easy theorem.
\end{theorem}

\begin{theorem*}\label{hard}
The zeros of the zeta function have real part equal to $1/2$.
\end{theorem*}

Theorem~\ref{easy} is an easy consequence of theorem~\ref{hard}
a proof of which is too long for this short note.

\end{document}

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