% Pour Combinatoire LCR %%%%%%%%%%% \def\Noteheadfont{\bfseries} \newtheorem{note}{Note}[section] \def\Commentheadfont{\bfseries} \newtheorem{comment}{Comment}[section] \def\Proof{\medskip\noindent {\it Proof --- \ }} \def\cqfd{\hfill $\Box$ \bigskip} %%%%%%%%%%% \def\Cl{\mathcal{C}} \def\F{\mathcal{F}} \def\fst{\mathbf{FSt}} \def\bs{\bigskip} \def\pointir{\unskip . --- \ignorespaces} \def\om{\omega} \def\si{\sigma} \def\ep{\epsilon} \def\mref#1{(\ref{#1})} \def\N{\mathbf{N}} \def\Q{\mathbf{Q}} \def\ra{\rightarrow} \def\binomial#1#2{\left(\,\begin{matrix} #1 \cr #2\end{matrix}\,\right)} \def\LDIAG{\mathbf{LDIAG}} \def\MQS{\mathbf{MQSym}} \newtheorem{conjecture}{Conjecture} \newcommand{\bfl}{\begin{flushleft}} \newcommand{\efl}{\end{flushleft}} \newcommand{\be}{\begin{enumerate}} \newcommand{\ee}{\end{enumerate}} \newcommand{\bi}{\begin{itemize}} \newcommand{\ei}{\end{itemize}} \newcommand{\bd}{\begin{description}} \newcommand{\ed}{\end{description}} \newcommand{\bc}{\begin{center}} \newcommand{\ec}{\end{center}} \newcommand{\osn}{\oldstylenums} \def \no{\noindent} % \def \acs{\textrm} \def \texteuro{euros} \newcommand\marg[1]{\marginpar{\raggedright\parindent=0pt\small #1}}