\newtheorem{ppte}{Propriété}
\newtheorem{theo}{Théorème}
\newtheorem{defi}{Définition}
\newtheorem{lemme}{Lemme}
\newtheorem{coro}{Corollaire}
\newtheorem{prop}{Proposition}
\newtheorem{reg}{Règle}
\newtheorem{conj}{Conjecture}
\newtheorem{remar}{Remarque}
\newtheorem{exem}{Exemple}

\newcommand{\rema}{\underline{Remarque} }
\newcommand{\exe}{\underline{Exemple} }
\newcommand{\pre}{\underline{Preuve}}
\newcommand{\cas}{\underline{Cas particulier}}
\newcommand{\cass}{\underline{Cas particuliers}}
\newcommand{\Not}{\underline{Notation} }
\newcommand{\Si}{\underline{Si} }
\newcommand{\si}{\underline{si} }
\newcommand{\alors}{\underline{alors} }
\newcommand{\cons}{\underline{Conséquence}}

\def\qed{\hfill\raise -2pt\hbox{\vrule\vbox to 10pt{\hrule width4pt\vfill\hrule}\vrule}}
\def\cqfd{\hfill\unskip\kern 6pt\penalty 500\qed\par}

\catcode`\@=11
\def\Eqalign#1{\null\,\vcenter{\openup\jot\m@th\ialign{
\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$\hfil
&&\quad\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$
\hfil\crcr #1\crcr}}\,}
\catcode`\@=12

\newcommand{\vecteur}[1]
{\overrightarrow{#1}}

\font\tenbb=msbm10
\font\sevenbb=msbm7
\font\fivebb=msbm5
\newfam\bbfam
\textfont\bbfam=\tenbb
\scriptfont\bbfam=\sevenbb
\scriptscriptfont\bbfam=\fivebb
\def\bb{\fam\bbfam\tenbb}
\let\oldbb=\bb
\def\bb #1{{\oldbb #1}}

\def\tvi{\vrule height 12pt depth 5pt width 0pt}
\def\tvj{\vrule height 12pt depth 5pt width 1pt}
\def\hfq{\hfill\,\,}
\def\cc#1{\hfq #1\hfq}
\def\tv{\tvi\vrule}
\def\tw{\tvj\vrule}
\def\traithorizontal{\noalign{\hrule}}
\def\traithorizontale{\noalign{\hrule height 1pt}}

\newcommand{\encadre}[1]
{\begin{center}
\fbox{\begin{minipage}{16cm}
{#1}
\end{minipage}}
\end{center}
}

\def\pgcd{\mathop{\rm pgcd}\nolimits}
\def\ppcm{\mathop{\rm ppcm}\nolimits}

\def\cut{{}\hfill\cr \hfill{}}

\newcommand{\biindice}[3]%
{
\renewcommand{\arraystretch}{0.5}
\begin{array}[t]{c}
#1\\
{\scriptstyle #2}\\
{\scriptstyle #3}
\end{array}
\renewcommand{\arraystretch}{1}
}

\newlength{\ltxt}
\newcommand{\compo}[4]{
\setlength{\ltxt}{\linewidth}
\setbox#1=\hbox{\includegraphics[scale=#3]{#2.#1}}
\addtolength{\ltxt}{-\wd#1}
\addtolength{\ltxt}{-10pt}
\begin{minipage}{\wd#1}
\includegraphics[scale=#3]{#2.#1}
\end{minipage}
\hfill
\begin{minipage}{\ltxt}
#4
\end{minipage}
}

\newcounter{num}[section]
\newcommand{\exo}{\addtocounter{num}{1}
\par
\par\underline{\bf Exercice~\thenum~:} }


