fact: Definition cocone_precompose_comp {D1 D2 D3 : Diagram G} (m2 : DiagramMap D2 D3) (m1 : DiagramMap D1 D2) (X : Type) : (cocone_precompose (X:=X) m1) o (cocone_precompose m2) == cocone_precompose (diagram_comp m2 m1).
imports: Basics Types Diagrams.Graph Diagrams.Diagram