proposition: Lemma isPredicate_is_invertible_2cell {C : bicat} {a b : C} {f g: C⟦a,b⟧} : isPredicate (is_invertible_2cell (f := f) (g := g)).
proof: Proof. intro x. apply isaprop_is_invertible_2cell. Qed.
imports: UniMath.Tactics.EnsureStructuredProofs UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.PrecategoryBinProduct