X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_transition%2Ffqu_teqx.ma;h=d24fe5813721808df46144c87621ac61530334da;hp=b7e77976ca9ff2500392d74492713a4e4e8ece46;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_teqx.ma b/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_teqx.ma
index b7e77976c..d24fe5813 100644
--- a/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_teqx.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_teqx.ma
@@ -19,7 +19,7 @@ include "static_2/s_transition/fqu_length.ma".
 
 (* Inversion lemmas with context-free sort-irrelevant equivalence for terms *)
 
-fact fqu_inv_teqx_aux: ∀b,G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ⬂[b] ⦃G2,L2,T2⦄ →
+fact fqu_inv_teqx_aux: ∀b,G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ⬂[b] ❪G2,L2,T2❫ →
                        G1 = G2 → |L1| = |L2| → T1 ≛ T2 → ⊥.
 #b #G1 #G2 #L1 #L2 #T1 #T2 * -G1 -G2 -L1 -L2 -T1 -T2
 [1: #I #G #L #V #_ #H elim (succ_inv_refl_sn … H)
@@ -29,7 +29,7 @@ fact fqu_inv_teqx_aux: ∀b,G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ⬂[b] ⦃G2,L2,T2
 qed-.
 
 (* Basic_2A1: uses: fqu_inv_eq *)
-lemma fqu_inv_teqx: ∀b,G,L1,L2,T1,T2. ⦃G,L1,T1⦄ ⬂[b] ⦃G,L2,T2⦄ →
+lemma fqu_inv_teqx: ∀b,G,L1,L2,T1,T2. ❪G,L1,T1❫ ⬂[b] ❪G,L2,T2❫ →
                     |L1| = |L2| → T1 ≛ T2 → ⊥.
 #b #G #L1 #L2 #T1 #T2 #H
 @(fqu_inv_teqx_aux … H) // (**) (* full auto fails *)