proposition: Lemma isaset_is_split_monic (m : A --> B) : has_homsets C -> isaset (is_split_monic m).
proof: Proof. intro; apply isaset_total2; [auto|]. intros. apply hlevelntosn; apply isaprop_is_retraction. assumption. Qed.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Epis UniMath.CategoryTheory.Retracts