the class of operating mode models of 2d streams
the 2d stream involved
(Forall (?Self ?2d-Stream-Involved)
(<=> (And (= (2d-Stream-Involved ?Self) ?2d-Stream-Involved)
(2d-Stream-Operating-Mode ?Self))
(And (Operating-Mode-Model ?Self)
(2d-Stream ?2d-Stream-Involved))))
(Forall (?Self ?Time)
(<=> (Active ?Time 2d-Stream-Operating-Mode ?Self)
(And (2d-Stream-Operating-Mode ?Self)
(Active ?Time Operating-Mode-Model ?Self))))