proposition: Lemma isiso_from_Coequalizer_to_Coequalizer {a b : C} {f g : C⟦a, b⟧} (E1 E2 : Coequalizer f g) : is_iso (from_Coequalizer_to_Coequalizer E1 E2).
proof: Proof. apply (is_iso_qinv _ (from_Coequalizer_to_Coequalizer E2 E1)). apply are_inverses_from_Coequalizer_to_Coequalizer. Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.Combinatorics.StandardFiniteSets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Limits.Graphs.Limits UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.Limits.Graphs.EqDiag UniMath.CategoryTheory.Limits.Coequalizers