\documentclass{article}
\usepackage[a5paper,landscape]{geometry}
\usepackage{amsmath,mathpazo}
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\makeatletter
\renewcommand\section{%
\@startsection {section}{1}{\z@}%
{-2ex \@plus -1ex \@minus -.2ex}%
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\begin{document}
\begin{center}
{\bfseries\large
% Title %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Talk or Poster title
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}
\par\vspace{.5em}
% Speaker %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Your Name
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\par
% Address %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Department of Mathematics,
Graduate School of Science,
Kyoto University,
Kyoto 606-8502,
Japan
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\par
Email:
% Email %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
example@example.edu
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\end{center}
% Abstract %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Please insert your abstract here. You can write equations as follows:
\begin{multline*}
\tau(k_1+1, k_2+1, k_3)\tau(k_1, k_2, k_3+1)
-\tau(k_1+1, k_2, k_3+1)\tau(k_1, k_2+1, k_3)\\
+\tau(k_1, k_2+1, k_3+1)\tau(k_1+1, k_2, k_3)
=0.
\end{multline*}
This is an example of citations \cite{hirota1977,polya1945}.
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% If you don't need references, please remove thebibliography environment. %%%%%
\begin{thebibliography}{1}\setlength{\itemsep}{-.5ex}
% References %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\bibitem{hirota1977}
R.~Hirota, Nonlinear partial difference equations. I.\ A difference analogue
of the Korteweg-de Vries equation, \textit{J.\ Phys.\ Soc.\ Japan}
\textbf{43} (1977), 1424--1433.
\bibitem{polya1945}
G.~Polya, \textit{How to solve it: a new aspect of mathematical method},
Princeton University Press, Princeton, 1945.
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\end{thebibliography}
\end{document}