Towards Sophisticated Air Traffic Control System Using Formal Methods

Box 11

	grd5: ∀A·A ∈ aircrafts_in_airport ⇒ statusof(A) ≠ TakingOff
	grd6: ∀A·A ∈ ready_to_takeoff_aircrafts ⇒ the_ready_to_takeoff_moment(A) ≥ the_ready_to_takeoff_moment(aircraft)