General ⇒ amsthm | Counters for Theorem Environments cause Problems

[itatitl]

To achieve a common numbering for my theorems, lemmas and propositions while using the amsthm package, I used the \newtheorem{prop}[thm], etc commands. However this leads to the "missing \begin{document}" error. If I put \begin{document} before \newtheorem{prop}[thm], it prints [thm], etc in the first page. What is the solution?

Code: Select all

\documentclass[12pt,twoside,A4]{report}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{theoremref}
\newtheorem{thm}{Theorem}[section]
\newtheorem{prop}[thm]{Proposition}[section]
\newtheorem{lem}[thm]{Lemma}[section]
\newtheorem{cor}[thm]{Corollary}[section]
\begin{document}
test
\end{document}

[localghost]

You cannot use two optional counter resets for a theorem definition.

Code: Select all

\documentclass[12pt,a4paper,twoside]{report}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{theoremref}

\newtheorem{thm}{Theorem}[section]
\newtheorem{prop}[thm]{Proposition}
\newtheorem{lem}[thm]{Lemma}
\newtheorem{cor}[thm]{Corollary}

\begin{document}
  Test
\end{document}

For details see Section 3 of the amsthm manual.


Thorsten

[itatitl]

Thanks for the reply. I see that the [section] and [thm] arguments are mutually exclusive. But is there any way to achieve this ( common numbering for theorems and lemmas but with section number prepended)? Is it possible to do this via running sections as different files of a single project.

[localghost]

[…] But is there any way to achieve this ( common numbering for theorems and lemmas but with section number prepended)? […]

Then those two have to be given the same numbering scheme.

Code: Select all

\documentclass[12pt,a4paper,twoside]{report}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{theoremref}

\newtheorem{thm}{Theorem}[section]
\newtheorem{prop}[thm]{Proposition}
\newtheorem{lem}{Lemma}[section]
\newtheorem{cor}[thm]{Corollary}

\begin{document}
  \chapter{Foo}
    \section{Bar}
      \begin{thm}
        Theorem
      \end{thm}
      \begin{lem}
        Lemma
      \end{lem}

\end{document}

[…] Is it possible to do this via running sections as different files of a single project.

This does not depend on whether the document is split into several files or not.

[itatitl]

Thanks for the reply. This clarifies it. I need not put [section] on lemma, prop, etc as I had already declared them to be [thm] and want to follow a common numbering scheme.