\newcommand{\LangAF}{\mathop{{\cal L}_{AF}}\nolimits}
\newcommand{\LangER}{\mathop{{\cal L}_{ER}}\nolimits}
\newcommand{\Alphabet}{\Sigma}
\newcommand{\donne}[1]{\buildrel\>#1\>\over\longrightarrow}
\newcommand{\vvv}{\mathop{\mathbf{v}{}}\nolimits}
\newcommand{\fff}{\mathop{\mathbf{f}{}}\nolimits}

\endinput