\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\begin{document}
\begin{abstract}
\begin{center}
{\large {\bf your title here}} \\ [+.1in]
{\bf name \\ [1ex]
address 
} \\ [+.2in]
\end{center}

\noindent

your abstract here

%% Joint work with...

\end{abstract}
\end{document}