X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Freducibility%2Ftnf_tif.ma;h=2a8ea3c498af5f72a00c8d4d0c73d004c2e29265;hb=5ac2dc4e01aca542ddd13c02b304c646d8df9799;hp=ecfc2f160e095fe0549abc764d8f5e9fd88ab572;hpb=a386e0eb6b20909ae78c825203d77647b8fde30c;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf_tif.ma b/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf_tif.ma
index ecfc2f160..2a8ea3c49 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf_tif.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/reducibility/tnf_tif.ma
@@ -20,7 +20,7 @@ include "basic_2/reducibility/tnf.ma".
 
 (* Main properties properties ***********************************************)
 
-lemma tpr_tif_eq: ∀T1,T2. T1 ➡ T2 →  𝐈[T1] → T1 = T2.
+lemma tpr_tif_eq: ∀T1,T2. T1 ➡ T2 →  𝐈⦃T1⦄ → T1 = T2.
 #T1 #T2 #H elim H -T1 -T2
 [ //
 | * #V1 #V2 #T1 #T2 #_ #_ #IHV1 #IHT1 #H
@@ -47,11 +47,11 @@ lemma tpr_tif_eq: ∀T1,T2. T1 ➡ T2 →  𝐈[T1] → T1 = T2.
 ]
 qed.
 
-theorem tif_tnf: ∀T1.  𝐈[T1] → 𝐍[T1].
+theorem tif_tnf: ∀T1.  𝐈⦃T1⦄ → 𝐍⦃T1⦄.
 /3 width=1/ qed.
 
 (* Note: this property is unusual *)
-lemma tnf_trf_false: ∀T1. 𝐑[T1] → 𝐍[T1] → ⊥.
+lemma tnf_trf_false: ∀T1. 𝐑⦃T1⦄ → 𝐍⦃T1⦄ → ⊥.
 #T1 #H elim H -T1
 [ #V #T #_ #IHV #H elim (tnf_inv_abst … H) -H /2 width=1/
 | #V #T #_ #IHT #H elim (tnf_inv_abst … H) -H /2 width=1/
@@ -64,11 +64,11 @@ lemma tnf_trf_false: ∀T1. 𝐑[T1] → 𝐍[T1] → ⊥.
 ]
 qed.
 
-theorem tnf_tif: ∀T1. 𝐍[T1] → 𝐈[T1].
+theorem tnf_tif: ∀T1. 𝐍⦃T1⦄ → 𝐈⦃T1⦄.
 /2 width=3/ qed.
 
-lemma tnf_abst: ∀V,T. 𝐍[V] → 𝐍[T] → 𝐍[ⓛV.T].
+lemma tnf_abst: ∀V,T. 𝐍⦃V⦄ → 𝐍⦃T⦄ → 𝐍⦃ⓛV.T⦄.
 /4 width=1/ qed.
 
-lemma tnf_appl: ∀V,T. 𝐍[V] → 𝐍[T] → 𝐒[T] → 𝐍[ⓐV.T].
+lemma tnf_appl: ∀V,T. 𝐍⦃V⦄ → 𝐍⦃T⦄ → 𝐒⦃T⦄ → 𝐍⦃ⓐV.T⦄.
 /4 width=1/ qed.