decidable : Prop → Type₁ inhabited : Type → Type measurable : Type → Type nonempty : Type → Prop point : Type → Type → Type setoid : Type → Type subsingleton : Type → Prop well_founded : Π {A : Type}, (A → A → Prop) → Prop decidable : Prop → Type₁ inhabited : Type → Type measurable : Type → Type nonempty : Type → Prop point : Type → Type → Type setoid : Type → Type subsingleton : Type → Prop well_founded : Π {A : Type}, (A → A → Prop) → Prop