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