`{D: Diagram G} {Q X} (H : IsColimit D Q) (C' : Cocone D X) : Q -> X := @equiv_inv _ _ _ (iscolimit_unicocone H X) C'.
Require Import Basics Types. Require Import Diagrams.Diagram. Require Import Diagrams.Graph. Require Import Diagrams.Cocone. Require Import Diagrams.ConstantDiagram. Require Import Colimits.Coeq.