fact: Definition make_span_diagram {C : category } (a b c : C) (f : C ⟦a, b⟧) (g : C⟦a, c⟧) : diagram span_graph C.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.Combinatorics.StandardFiniteSets UniMath.Combinatorics.FiniteSets