fact: Definition edge_op {g : graph} {v w : pr1 g} (e : pr2 g v w) : pr2 (graph_op g) w v := e.
imports: UniMath.Foundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.OppositeCategory.Core UniMath.CategoryTheory.Limits.Cones UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.Limits.Graphs.Limits UniMath.CategoryTheory.Chains.Chains UniMath.CategoryTheory.Chains.Cochains