incomplete proof completed

[helm.git] / helm / matita / tests / simpl.ma

diff --git a/helm/matita/tests/simpl.ma b/helm/matita/tests/simpl.ma
index c455b7692b3f9f7228afb8790239f8c9334e65af..8b0f1a6a0196ab225cf00b546f12e52d019aaff7 100644 (file)
--- a/helm/matita/tests/simpl.ma
+++ b/helm/matita/tests/simpl.ma
@@ -4,5 +4,9 @@ theorem a :
  \forall A:Set.
  \forall x,y : A.
  not (x = y) \to not(y = x).
-intro.
+intros.
 simplify.
+intro. apply H.
+symmetry.
+exact H1.
+qed.
\ No newline at end of file