```
% pandoc -f latex -t plain
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{amsthm}
\theoremstyle{plain}
\newtheorem{thm}{\protect\theoremname}
\newtheorem{prop}[thm]{\protect\propositionname}
\usepackage{babel}
\providecommand{\propositionname}{Proposition}
\providecommand{\theoremname}{Theorem}

\begin{document}
\begin{thm}
first theorem
\end{thm}
\begin{prop}
first proposition
\end{prop}

\end{document}
<div class="thm">
<p><strong>Theorem 1</strong>. <em>first theorem</em></p>
</div>
<div class="prop">
<p><strong>Proposition 2</strong>. <em>first proposition</em></p>
</div>
jgm@Johns-MacBook-Air:~/src/pandoc % `make binpath` -f latex -t plain
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{amsthm}
\theoremstyle{plain}
\newtheorem{thm}{\protect\theoremname}
\newtheorem{prop}[thm]{\protect\propositionname}
\usepackage{babel}
\providecommand{\propositionname}{Proposition}
\providecommand{\theoremname}{Theorem}

\begin{document}
\begin{thm}
first theorem
\end{thm}
\begin{prop}
first proposition
\end{prop}

\end{document}
^D
Theorem 1. first theorem

Proposition 2. first proposition
```