fact: Definition transport_E'_V {i j : G} (g : G i j) (x : D i) (y : E (i; x)) : transport E' (colimp i j g x)^ y = E_f g x y.
imports: Basics Types Diagrams.Diagram Diagrams.Graph Diagrams.Cocone Diagrams.DDiagram Colimits.Colimit