(* Copied from RamifyCoq project *)
Require Export Coq.Relations.Relations.
Require Export Coq.Classes.Equivalence.
Require Coq.Setoids.Setoid.
Definition full_relation {A} : relation A := fun _ _ => True.

Lemma same_relation_spec: forall {A} a1 a2, same_relation A a1 a2 <-> pointwise_relation A (pointwise_relation A iff) a1 a2.