import logic data.prod open prod inhabited section parameter {A : Type} parameter {B : Type} parameter Ha : inhabited A parameter Hb : inhabited B -- The section mechanism only includes parameters that are explicitly cited. -- So, we use the 'including' expression to make explicit we want to use -- Ha and Hb include Ha Hb theorem tst : inhabited (Prop × A × B) end (* print(get_env():find("tst"):value()) *)