X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fcpxs_teqo.ma;h=93d8cd3decb0da921e803f07ec74b2eb638dce0b;hp=571a46efea2cbe77768da78427f5113dc385228d;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_teqo.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_teqo.ma
index 571a46efe..93d8cd3de 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_teqo.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_teqo.ma
@@ -22,7 +22,7 @@ include "basic_2/rt_computation/lpxs_cpxs.ma".
 (* Forward lemmas with sort-irrelevant outer equivalence for terms **********)
 
 lemma cpxs_fwd_sort (h) (G) (L):
-      ∀X2,s1. ⦃G,L⦄ ⊢ ⋆s1 ⬈*[h] X2 → ⋆s1 ⩳ X2.
+      ∀X2,s1. ❪G,L❫ ⊢ ⋆s1 ⬈*[h] X2 → ⋆s1 ⩳ X2.
 #h #G #L #X2 #s1 #H
 elim (cpxs_inv_sort1 … H) -H #s2 #H destruct //
 qed-.
@@ -30,10 +30,10 @@ qed-.
 (* Note: probably this is an inversion lemma *)
 (* Basic_2A1: was: cpxs_fwd_delta *)
 lemma cpxs_fwd_delta_drops (h) (I) (G) (L) (K):
-      ∀V1,i. ⇩*[i] L ≘ K.ⓑ{I}V1 →
+      ∀V1,i. ⇩*[i] L ≘ K.ⓑ[I]V1 →
       ∀V2. ⇧*[↑i] V1 ≘ V2 →
-      ∀X2. ⦃G,L⦄ ⊢ #i ⬈*[h] X2 →
-      ∨∨ #i ⩳ X2 | ⦃G,L⦄ ⊢ V2 ⬈*[h] X2.
+      ∀X2. ❪G,L❫ ⊢ #i ⬈*[h] X2 →
+      ∨∨ #i ⩳ X2 | ❪G,L❫ ⊢ V2 ⬈*[h] X2.
 #h #I #G #L #K #V1 #i #HLK #V2 #HV12 #X2 #H
 elim (cpxs_inv_lref1_drops … H) -H /2 width=1 by or_introl/
 * #I0 #K0 #V0 #U0 #HLK0 #HVU0 #HU0
@@ -43,8 +43,8 @@ qed-.
 
 (* Basic_1: was just: pr3_iso_beta *)
 lemma cpxs_fwd_beta (h) (p) (G) (L):
-      ∀V,W,T,X2. ⦃G,L⦄ ⊢ ⓐV.ⓛ{p}W.T ⬈*[h] X2 →
-      ∨∨ ⓐV.ⓛ{p}W.T ⩳ X2 | ⦃G,L⦄ ⊢ ⓓ{p}ⓝW.V.T ⬈*[h] X2.
+      ∀V,W,T,X2. ❪G,L❫ ⊢ ⓐV.ⓛ[p]W.T ⬈*[h] X2 →
+      ∨∨ ⓐV.ⓛ[p]W.T ⩳ X2 | ❪G,L❫ ⊢ ⓓ[p]ⓝW.V.T ⬈*[h] X2.
 #h #p #G #L #V #W #T #X2 #H elim (cpxs_inv_appl1 … H) -H *
 [ #V0 #T0 #_ #_ #H destruct /2 width=1 by teqo_pair, or_introl/
 | #b #W0 #T0 #HT0 #HU
@@ -57,9 +57,9 @@ lemma cpxs_fwd_beta (h) (p) (G) (L):
 qed-.
 
 lemma cpxs_fwd_theta (h) (p) (G) (L):
-           ∀V1,V,T,X2. ⦃G,L⦄ ⊢ ⓐV1.ⓓ{p}V.T ⬈*[h] X2 →
+           ∀V1,V,T,X2. ❪G,L❫ ⊢ ⓐV1.ⓓ[p]V.T ⬈*[h] X2 →
            ∀V2. ⇧*[1] V1 ≘ V2 →
-           ∨∨ ⓐV1.ⓓ{p}V.T ⩳ X2 | ⦃G,L⦄ ⊢ ⓓ{p}V.ⓐV2.T ⬈*[h] X2.
+           ∨∨ ⓐV1.ⓓ[p]V.T ⩳ X2 | ❪G,L❫ ⊢ ⓓ[p]V.ⓐV2.T ⬈*[h] X2.
 #h #p #G #L #V1 #V #T #X2 #H #V2 #HV12
 elim (cpxs_inv_appl1 … H) -H *
 [ -HV12 #V0 #T0 #_ #_ #H destruct /2 width=1 by teqo_pair, or_introl/
@@ -69,8 +69,8 @@ elim (cpxs_inv_appl1 … H) -H *
   | #X #HT2 #H #H0 destruct
     elim (lifts_inv_bind1 … H) -H #W2 #T2 #HW2 #HT02 #H destruct
     @or_intror @(cpxs_trans … HU) -X2 (**) (* explicit constructor *)
-    @(cpxs_trans … (+ⓓV.ⓐV2.ⓛ{q}W2.T2)) [ /3 width=1 by cpxs_flat_dx, cpxs_bind_dx/ ] -T
-    @(cpxs_strap2 … (ⓐV1.ⓛ{q}W.T0)) [2: /2 width=1 by cpxs_beta_dx/ ]
+    @(cpxs_trans … (+ⓓV.ⓐV2.ⓛ[q]W2.T2)) [ /3 width=1 by cpxs_flat_dx, cpxs_bind_dx/ ] -T
+    @(cpxs_strap2 … (ⓐV1.ⓛ[q]W.T0)) [2: /2 width=1 by cpxs_beta_dx/ ]
     /4 width=7 by cpx_zeta, lifts_bind, lifts_flat/
   ]
 | #q #V3 #V4 #V0 #T0 #HV13 #HV34 #HT0 #HU
@@ -81,22 +81,22 @@ elim (cpxs_inv_appl1 … H) -H *
   | #X #HT1 #H #H0 destruct
     elim (lifts_inv_bind1 … H) -H #V5 #T5 #HV05 #HT05 #H destruct
     lapply (cpxs_lifts_bi … HV13 (Ⓣ) … (L.ⓓV0) … HV12 … HV34) -V3 /3 width=1 by drops_refl, drops_drop/ #HV24
-    @(cpxs_trans … (+ⓓV.ⓐV2.ⓓ{q}V5.T5)) [ /3 width=1 by cpxs_flat_dx, cpxs_bind_dx/ ] -T
-    @(cpxs_strap2 … (ⓐV1.ⓓ{q}V0.T0)) [ /4 width=7 by cpx_zeta, lifts_bind, lifts_flat/ ] -V -V5 -T5
-    @(cpxs_strap2 … (ⓓ{q}V0.ⓐV2.T0)) /3 width=3 by cpxs_pair_sn, cpxs_bind_dx, cpx_theta/
+    @(cpxs_trans … (+ⓓV.ⓐV2.ⓓ[q]V5.T5)) [ /3 width=1 by cpxs_flat_dx, cpxs_bind_dx/ ] -T
+    @(cpxs_strap2 … (ⓐV1.ⓓ[q]V0.T0)) [ /4 width=7 by cpx_zeta, lifts_bind, lifts_flat/ ] -V -V5 -T5
+    @(cpxs_strap2 … (ⓓ[q]V0.ⓐV2.T0)) /3 width=3 by cpxs_pair_sn, cpxs_bind_dx, cpx_theta/
   ]
 ]
 qed-.
 
 lemma cpxs_fwd_cast (h) (G) (L):
-      ∀W,T,X2. ⦃G,L⦄ ⊢ ⓝW.T ⬈*[h] X2 →
-      ∨∨ ⓝW. T ⩳ X2 | ⦃G,L⦄ ⊢ T ⬈*[h] X2 | ⦃G,L⦄ ⊢ W ⬈*[h] X2.
+      ∀W,T,X2. ❪G,L❫ ⊢ ⓝW.T ⬈*[h] X2 →
+      ∨∨ ⓝW. T ⩳ X2 | ❪G,L❫ ⊢ T ⬈*[h] X2 | ❪G,L❫ ⊢ W ⬈*[h] X2.
 #h #G #L #W #T #X2 #H
 elim (cpxs_inv_cast1 … H) -H /2 width=1 by or3_intro1, or3_intro2/ *
 #W0 #T0 #_ #_ #H destruct /2 width=1 by teqo_pair, or3_intro0/
 qed-.
 
 lemma cpxs_fwd_cnx (h) (G) (L):
-      ∀T1. ⦃G,L⦄ ⊢ ⬈[h] 𝐍⦃T1⦄ →
-      ∀X2. ⦃G,L⦄ ⊢ T1 ⬈*[h] X2 → T1 ⩳ X2.
+      ∀T1. ❪G,L❫ ⊢ ⬈[h] 𝐍❪T1❫ →
+      ∀X2. ❪G,L❫ ⊢ T1 ⬈*[h] X2 → T1 ⩳ X2.
 /3 width=5 by cpxs_inv_cnx1, teqx_teqo/ qed-.