proposition: Lemma opp_llp_is_rlp_opp {C : category} (L : morphism_class C) : morphism_class_opp (llp L) = rlp (morphism_class_opp L).
proof: Proof. rewrite <- (morphism_class_opp_opp (rlp _)). rewrite (opp_rlp_is_llp_opp _). trivial. Qed.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.opp_precat UniMath.CategoryTheory.Limits.Opp UniMath.ModelCategories.Retract UniMath.ModelCategories.MorphismClass UniMath.CategoryTheory.DisplayedCats.Examples.Arrow