update in basic_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_computation / cpms.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms.ma
index cbfd28726da4b217c36efd0377120dc984680995..edb931591a9d69afc644c70cd099ef20bcc53496 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms.ma
@@ -31,8 +31,27 @@ interpretation
    "context-sensitive parallel r-computation (term)"
    'PRedStar h G L T1 T2 = (cpms h G L O T1 T2).
 
+(* Basic eliminators ********************************************************)
+
+lemma cpms_ind_sn (h) (G) (L) (T2) (Q:relation2 …):
+                  Q 0 T2 →
+                  (∀n1,n2,T1,T. ⦃G, L⦄ ⊢ T1 ➡[n1, h] T → ⦃G, L⦄ ⊢ T ➡*[n2, h] T2 → Q n2 T → Q (n1+n2) T1) →
+                  ∀n,T1. ⦃G, L⦄ ⊢ T1 ➡*[n, h] T2 → Q n T1.
+#h #G #L #T2 #R @ltc_ind_sn_refl //
+qed-.
+
+lemma cpms_ind_dx (h) (G) (L) (T1) (Q:relation2 …):
+                  Q 0 T1 →
+                  (∀n1,n2,T,T2. ⦃G, L⦄ ⊢ T1 ➡*[n1, h] T → Q n1 T → ⦃G, L⦄ ⊢ T ➡[n2, h] T2 → Q (n1+n2) T2) →
+                  ∀n,T2. ⦃G, L⦄ ⊢ T1 ➡*[n, h] T2 → Q n T2.
+#h #G #L #T1 #R @ltc_ind_dx_refl //
+qed-.
+
 (* Basic properties *********************************************************)
 
+(* Basic_1: includes: pr1_pr0 *)
+(* Basic_1: uses: pr3_pr2 *)
+(* Basic_2A1: includes: cpr_cprs *)
 lemma cpm_cpms (h) (G) (L): ∀n,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[n, h] T2 → ⦃G, L⦄ ⊢ T1 ➡*[n, h] T2.
 /2 width=1 by ltc_rc/ qed.
 
@@ -44,27 +63,20 @@ lemma cpms_step_dx (h) (G) (L): ∀n1,T1,T. ⦃G, L⦄ ⊢ T1 ➡*[n1, h] T →
                                 ∀n2,T2. ⦃G, L⦄ ⊢ T ➡[n2, h] T2 → ⦃G, L⦄ ⊢ T1 ➡*[n1+n2, h] T2.
 /2 width=3 by ltc_dx/ qed-.
 
+(* Basic_2A1: uses: cprs_bind_dx *)
+lemma cpms_bind_dx (n) (h) (G) (L):
+                   ∀V1,V2. ⦃G, L⦄ ⊢ V1 ➡[h] V2 →
+                   ∀I,T1,T2. ⦃G, L.ⓑ{I}V1⦄ ⊢ T1 ➡*[n, h] T2 →
+                   ∀p. ⦃G, L⦄ ⊢ ⓑ{p,I}V1.T1 ➡*[n, h] ⓑ{p,I}V2.T2.
+#n #h #G #L #V1 #V2 #HV12 #I #T1 #T2 #H #a @(cpms_ind_sn … H) -T1
+/3 width=3 by cpms_step_sn, cpm_cpms, cpm_bind/ qed.
+
 (* Basic properties with r-transition ***************************************)
 
+(* Basic_1: was: pr3_refl *)
 lemma cprs_refl: ∀h,G,L. reflexive … (cpms h G L 0).
 /2 width=1 by cpm_cpms/ qed.
 
-(* Basic eliminators ********************************************************)
-
-lemma cpms_ind_sn (h) (G) (L) (T2) (Q:relation2 …):
-                  Q 0 T2 →
-                  (∀n1,n2,T1,T. ⦃G, L⦄ ⊢ T1 ➡[n1, h] T → ⦃G, L⦄ ⊢ T ➡*[n2, h] T2 → Q n2 T → Q (n1+n2) T1) →
-                  ∀n,T1. ⦃G, L⦄ ⊢ T1 ➡*[n, h] T2 → Q n T1.
-#h #G #L #T2 #R @ltc_ind_sn_refl //
-qed-.
-
-lemma cpms_ind_dx (h) (G) (L) (T1) (Q:relation2 …):
-                  Q 0 T1 →
-                  (∀n1,n2,T,T2. ⦃G, L⦄ ⊢ T1 ➡*[n1, h] T → Q n1 T → ⦃G, L⦄ ⊢ T ➡[n2, h] T2 → Q (n1+n2) T2) →
-                  ∀n,T2. ⦃G, L⦄ ⊢ T1 ➡*[n, h] T2 → Q n T2.
-#h #G #L #T1 #R @ltc_ind_dx_refl //
-qed-.
-
 (* Basic_2A1: removed theorems 4:
               sta_cprs_scpds lstas_scpds scpds_strap1 scpds_fwd_cprs
 *)