fact: Definition from_col {C:category} {I} {d:I -> ob C} (D:Product d) {b:ob C} : (∏ i, Hom C b (d i)) ≃ (Hom C b (universalObject D)).
imports: UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.RepresentableFunctors.Representation UniMath.CategoryTheory.RepresentableFunctors.Precategories