fact: Definition to_constant_nat_trans {C₁ C₂ : category} (F : C₁ ⟶ C₂) (y : C₂) (fs : ∏ (x : C₁), F x --> y) (ps : ∏ (x₁ x₂ : C₁) (g : x₁ --> x₂), # F g · fs x₂ = fs x₁) : nat_trans F (constant_functor C₁ C₂ y).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.TransportMorphisms UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Univalence