notation bug due to previous refactoring

diff --git a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq.ma b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq.ma
index 52784b53fa8dca6d6a61718bc8681dc2e51f8017..41bdd9f1f99572c19a011413bfeacb4d17ea09b2 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq.ma
@@ -174,7 +174,7 @@ qed-.
 lemma tdneq_inv_pair: ∀h,o,I1,I2,V1,V2,T1,T2.
                       (②{I1}V1.T1 ≡[h, o] ②{I2}V2.T2 → ⊥) → 
                       ∨∨ I1 = I2 → ⊥
-                      |  V1 ≡[h, o] V2 → ⊥
+                      |  (V1 ≡[h, o] V2 → ⊥)
                       |  (T1 ≡[h, o] T2 → ⊥).
 #h #o #I1 #I2 #V1 #V2 #T1 #T2 #H12
 elim (eq_item2_dec I1 I2) /3 width=1 by or3_intro0/ #H destruct