documentclass[french,a4paper,12pt]{report}
usepackage{babel}
usepackage{graphicx}
usepackage{amsmath,amsfonts,amstext,amssymb}
usepackage{times}
usepackage{setspace}
usepackage{Lettrine}
usepackage{fancyhdr}
usepackage{multirow}
usepackage{pslatex}
usepackage[T1]{fontenc}
usepackage[latin1]{inputenc}
usepackage{array}
usepackage{enumerate}
usepackage{color}
usepackage{version}
usepackage{newcent}
usepackage{nestochp}
usepackage{anysize}
usepackage{amsthm}
makeatletter
g@addto@macroth@remark{thm@headpunct{ }}
makeatother
theoremstyle{remark}
newtheorem{Def}{Définition}
newtheorem*{pre}{Preuve}
newtheorem{The}{Théorème}
newtheorem{Lem}{Lemme}
newtheorem*{Rem}{Remarque}
newtheorem{pro}{Proposition}
 numberwithin{equation}{chapter}