fact: Definition z_iso_from_Equalizer_to_Equalizer {y z : C} {f g : y --> z} (E E' : Equalizer f g) : z_iso E E'.
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Retracts