fact: Definition three_mor_mor01 {C : category} {xxx yyy : three C} (fff : xxx --> yyy) : (three_mor01 xxx) --> (three_mor01 yyy).
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Total UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.DisplayedCats.Examples.Arrow