\begin{isabelle}% \isacommand{lemma}~{"}{\isasymnot}~m~<~n~{\isasymand}~m~<~n+1~{\isasymLongrightarrow}~m~=~n{"}\isanewline \end{isabelle}% %%% Local Variables: %%% mode: latex %%% TeX-master: "root" %%% End: