fact: Definition Book_9_1_15 A `{H : HoTT.Categories.Category.Univalent.IsCategory A} : IsHSet (HoTT.Categories.Category.Core.object A) <-> (forall a b, IsHProp (@HoTT.Categories.Category.Morphisms.Isomorphic A a b)).
imports: HoTT(Basics Truncations)