`{D: Diagram G} {Q X} (H : IsLimit D Q) (C' : Cone X D) : X -> Q := @equiv_inv _ _ _ (islimit_unicone H X) C'.
Require Import Basics. Require Import Diagrams.Diagram. Require Import Diagrams.Graph. Require Import Diagrams.Cone. Require Import Diagrams.ConstantDiagram.