(* Note: it does not hold replacing |L1| with |L2| *)
lemma cprs_lsubs_conf: ∀L1,T1,T2. L1 ⊢ T1 ➡* T2 →
- ∀L2. L1 [0, |L1|] ≼ L2 → L2 ⊢ T1 ➡* T2.
+ ∀L2. L1 ≼ [0, |L1|] L2 → L2 ⊢ T1 ➡* T2.
/3 width=3/
qed.
+(* Basic_1: was only: pr3_thin_dx *)
lemma cprs_flat_dx: ∀I,L,V1,V2. L ⊢ V1 ➡ V2 → ∀T1,T2. L ⊢ T1 ➡* T2 →
L ⊢ ⓕ{I} V1. T1 ➡* ⓕ{I} V2. T2.
#I #L #V1 #V2 #HV12 #T1 #T2 #HT12 @(cprs_ind … HT12) -T2 /3 width=1/
qed-.
(* Basic_1: was: pr3_gen_cast *)
-lemma cprs_inv_cast1: â\88\80L,W1,T1,U2. L â\8a¢ â\93£W1.T1 ➡* U2 → L ⊢ T1 ➡* U2 ∨
- â\88\83â\88\83W2,T2. L â\8a¢ W1 â\9e¡* W2 & L â\8a¢ T1 â\9e¡* T2 & U2 = â\93£W2.T2.
+lemma cprs_inv_cast1: â\88\80L,W1,T1,U2. L â\8a¢ â\93\9dW1.T1 ➡* U2 → L ⊢ T1 ➡* U2 ∨
+ â\88\83â\88\83W2,T2. L â\8a¢ W1 â\9e¡* W2 & L â\8a¢ T1 â\9e¡* T2 & U2 = â\93\9dW2.T2.
#L #W1 #T1 #U2 #H @(cprs_ind … H) -U2 /3 width=5/
#U2 #U #_ #HU2 * /3 width=3/ *
#W #T #HW1 #HT1 #H destruct
#W2 #T2 #HW2 #HT2 #H destruct /4 width=5/
qed-.
-lemma cprs_inv_cnf1: ∀L,T,U. L ⊢ T ➡* U → L ⊢ 𝐍[T] → T = U.
+(* Basic_1: was: nf2_pr3_unfold *)
+lemma cprs_inv_cnf1: ∀L,T,U. L ⊢ T ➡* U → L ⊢ 𝐍⦃T⦄ → T = U.
#L #T #U #H @(cprs_ind_dx … H) -T //
#T0 #T #H1T0 #_ #IHT #H2T0
lapply (H2T0 … H1T0) -H1T0 #H destruct /2 width=1/
qed-.
-(* Basic_1: removed theorems 6:
+(* Basic_1: removed theorems 10:
clear_pr3_trans pr3_cflat pr3_gen_bind
+ pr3_head_1 pr3_head_2 pr3_head_21 pr3_head_12
pr3_iso_appl_bind pr3_iso_appls_appl_bind pr3_iso_appls_bind
*)