deletions | additions       diff --git a/header.tex b/header.tex  index 37c95ac..51136d1 100644  --- a/header.tex  +++ b/header.tex 
...
%\newcommand{\msun}{\,\mathrm{M}_\odot}   \newtheorem{theorem}{Theorem} %\newtheorem{theorem}{Theorem}  \newtheorem{theorem}{Theorem}[section]  \newtheorem{proof}{Proof}   \newtheorem{definition}{Definition}  \newtheorem{example}{Example}