\documentstyle[ima-abst]{report}
% This is an example abstract for the IMA Linear Algebra and Its Applications
% conference, using the style file ima-abst.sty.
\begin{document}
\title{Parallel Computation of the Polar Decomposition}
\abstract{
We examine the relationship between the polar decomposition and the
matrix sign function and show that the two satisfy some
analogous properties. In particular, a property or iteration for the
matrix sign function yields a corresponding property or iteration for
the polar decomposition. We use this relationship to derive a
parallel method for computing the polar decomposition and we
describe a practical implementation of the method on the
Kendall Square Research KSR1 virtual shared memory computer.
}
% If only one author, type as follows
% \author{Nicholas J. Higham\\
% University of Manchester, Manchester, UK}
% If two authors, as here, use \author command and italics to indicate speaker.
\author{{\it Nicholas J. Higham}\\
University of Manchester, Manchester, UK\\
Pythagoras Papadimitriou,\\
University of Manchester, Manchester, UK}
\end{document}