generalize Borel-set properties from real/ereal/ordered_euclidean_spaces to order_topology and real_normed_vector
\index{model checking example|(}%
\index{lfp@{\texttt{lfp}}!applications of|see{CTL}}
\input{Base.tex}
\input{PDL.tex}
\input{CTL.tex}
\index{model checking example|)}