interpretation "SET dagger" 'prop1 h = (prop11_SET1 _ _ _ _ _ h).
interpretation "unary morphism1" 'Imply a b = (arrows2 SET1 a b).
interpretation "SET1 eq" 'eq x y = (eq_rel1 _ (eq'' _) x y).
interpretation "SET dagger" 'prop1 h = (prop11_SET1 _ _ _ _ _ h).
interpretation "unary morphism1" 'Imply a b = (arrows2 SET1 a b).
interpretation "SET1 eq" 'eq x y = (eq_rel1 _ (eq'' _) x y).