fact: Definition equiv_iff_hprop `{IsHProp A} `{IsHProp B} : (A -> B) -> (B -> A) -> (A <~> B) := fun f g => equiv_iff_hprop_uncurried (f, g).
imports: Basics.Overture Basics.Contractible Basics.Equivalences Basics.Tactics Basics.Nat