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\documentclass{article}
\begin{document}
\title{Time}
\author{Gabrielle Allen}
\date{1999}
\maketitle
\abstract{Calculates the timestep used for an evolution}
\section{Purpose}
This, currently very simple, thorn provides a routine for calculating
the timestep for an evolution based on the spatial Cartesian grid spacing.
This thorn will be extended in the future to include features like
a dynamic Courant condition. The thorn works for up to 3 spatial
dimensions.
\section{Comments}
The timestep, which is passed into the Cactus variable {\tt cctk\_delta\_time},
is calculated by the algorithm
$$
\Delta t = \mbox{\tt dtfac} * \mbox{min}(\Delta x^i)
$$
% Automatically created from the ccl files by using gmake thorndoc
\include{interface}
\include{param}
\include{schedule}
\end{document}
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