diff options
| -rw-r--r-- | test-suite/success/setoid_test.v | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test-suite/success/setoid_test.v b/test-suite/success/setoid_test.v index dd1022f089..e99b3c19bb 100644 --- a/test-suite/success/setoid_test.v +++ b/test-suite/success/setoid_test.v @@ -104,3 +104,15 @@ setoid_rewrite <- H. trivial. Qed. +(* Unifying the domain up to delta-conversion (example from emakarov) *) + +Definition id: Set -> Set := fun A => A. +Definition rel : forall A : Set, relation (id A) := @eq. +Definition f: forall A : Set, A -> A := fun A x => x. + +Add Relation id rel as eq_rel. + +Add Morphism f with signature rel ++> rel as f_morph. +Proof. +unfold rel, f. trivial. +Qed. |