\documentclass[twoside]{article}
\usepackage{color}
\usepackage{latexsym}
\usepackage{amsmath}
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\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{indentfirst}
\usepackage{makeidx}
\usepackage{url}
\usepackage{wrapfig}
\usepackage{hyperref}
\usepackage{times,url}
\usepackage[normal]{subfigure}


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\textheight23truecm
\textwidth15.0truecm
\topmargin-1.5cm
\evensidemargin1cm
\oddsidemargin1cm
\headsep 12pt
\setlength{\marginparwidth}{1.2cm}
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\begin{document}
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\newtheorem{coro}{\bf \sffamily Corollary}
\newtheorem{theo}{\bf \sffamily Theorem}
\newtheorem{prop}{\bf \sffamily Proposition}
\newtheorem{rem}{\bf \sffamily Remark}
\newtheorem{lemma}{\bf \sffamily Lemma}
\newtheorem{defi} {\bf \sffamily Definition}
\newtheorem{nota}{\bf \sffamily Notation}



\title{\Large \bfseries \sffamily Title}
\author{\bfseries\sffamily Author \thanks{Affiliation (Institute), Postal address.  {e--mail address@server}}}
\date{}
\maketitle


\end{document}
