lemma cpts_delta (h) (n) (G):
∀K,V1,V2. ❪G,K❫ ⊢ V1 ⬆*[h,n] V2 →
- ∀W2. ⇧*[1] V2 ≘ W2 → ❪G,K.ⓓV1❫ ⊢ #0 ⬆*[h,n] W2.
+ ∀W2. ⇧[1] V2 ≘ W2 → ❪G,K.ⓓV1❫ ⊢ #0 ⬆*[h,n] W2.
#h #n #G #K #V1 #V2 #H @(cpts_ind_dx … H) -V2
[ /3 width=3 by cpt_cpts, cpt_delta/
| #n1 #n2 #V #V2 #_ #IH #HV2 #W2 #HVW2
lemma cpts_ell (h) (n) (G):
∀K,V1,V2. ❪G,K❫ ⊢ V1 ⬆*[h,n] V2 →
- ∀W2. ⇧*[1] V2 ≘ W2 → ❪G,K.ⓛV1❫ ⊢ #0 ⬆*[h,↑n] W2.
+ ∀W2. ⇧[1] V2 ≘ W2 → ❪G,K.ⓛV1❫ ⊢ #0 ⬆*[h,↑n] W2.
#h #n #G #K #V1 #V2 #H @(cpts_ind_dx … H) -V2
[ /3 width=3 by cpt_cpts, cpt_ell/
| #n1 #n2 #V #V2 #_ #IH #HV2 #W2 #HVW2
lemma cpts_lref (h) (n) (I) (G):
∀K,T,i. ❪G,K❫ ⊢ #i ⬆*[h,n] T →
- ∀U. ⇧*[1] T ≘ U → ❪G,K.ⓘ[I]❫ ⊢ #↑i ⬆*[h,n] U.
+ ∀U. ⇧[1] T ≘ U → ❪G,K.ⓘ[I]❫ ⊢ #↑i ⬆*[h,n] U.
#h #n #I #G #K #T #i #H @(cpts_ind_dx … H) -T
[ /3 width=3 by cpt_cpts, cpt_lref/
| #n1 #n2 #T #T2 #_ #IH #HT2 #U2 #HTU2
qed.
lemma cpts_delta_drops (h) (n) (G):
- ∀L,K,V,i. ⇩*[i] L ≘ K.ⓓV →
+ ∀L,K,V,i. ⇩[i] L ≘ K.ⓓV →
∀V2. ❪G,K❫ ⊢ V ⬆*[h,n] V2 →
- ∀W2. ⇧*[↑i] V2 ≘ W2 → ❪G,L❫ ⊢ #i ⬆*[h,n] W2.
+ ∀W2. ⇧[↑i] V2 ≘ W2 → ❪G,L❫ ⊢ #i ⬆*[h,n] W2.
#h #n #G #L #K #V #i #HLK #V2 #H @(cpts_ind_dx … H) -V2
[ /3 width=6 by cpt_cpts, cpt_delta_drops/
| #n1 #n2 #V1 #V2 #_ #IH #HV12 #W2 #HVW2
qed.
lemma cpts_ell_drops (h) (n) (G):
- ∀L,K,W,i. ⇩*[i] L ≘ K.ⓛW →
+ ∀L,K,W,i. ⇩[i] L ≘ K.ⓛW →
∀W2. ❪G,K❫ ⊢ W ⬆*[h,n] W2 →
- ∀V2. ⇧*[↑i] W2 ≘ V2 → ❪G,L❫ ⊢ #i ⬆*[h,↑n] V2.
+ ∀V2. ⇧[↑i] W2 ≘ V2 → ❪G,L❫ ⊢ #i ⬆*[h,↑n] V2.
#h #n #G #L #K #W #i #HLK #W2 #H @(cpts_ind_dx … H) -W2
[ /3 width=6 by cpt_cpts, cpt_ell_drops/
| #n1 #n2 #W1 #W2 #_ #IH #HW12 #V2 #HWV2
lemma cpts_inv_lref_sn_drops (h) (n) (G) (L) (i):
∀X2. ❪G,L❫ ⊢ #i ⬆*[h,n] X2 →
∨∨ ∧∧ X2 = #i & n = 0
- | ∃∃K,V,V2. ⇩*[i] L ≘ K.ⓓV & ❪G,K❫ ⊢ V ⬆*[h,n] V2 & ⇧*[↑i] V2 ≘ X2
- | ∃∃m,K,V,V2. ⇩*[i] L ≘ K.ⓛV & ❪G,K❫ ⊢ V ⬆*[h,m] V2 & ⇧*[↑i] V2 ≘ X2 & n = ↑m.
+ | ∃∃K,V,V2. ⇩[i] L ≘ K.ⓓV & ❪G,K❫ ⊢ V ⬆*[h,n] V2 & ⇧[↑i] V2 ≘ X2
+ | ∃∃m,K,V,V2. ⇩[i] L ≘ K.ⓛV & ❪G,K❫ ⊢ V ⬆*[h,m] V2 & ⇧[↑i] V2 ≘ X2 & n = ↑m.
#h #n #G #L #i #X2 #H @(cpts_ind_dx … H) -X2
[ /3 width=1 by or3_intro0, conj/
| #n1 #n2 #T #T2 #_ #IH #HT2 cases IH -IH *
lemma cpts_inv_delta_sn (h) (n) (G) (K) (V):
∀X2. ❪G,K.ⓓV❫ ⊢ #0 ⬆*[h,n] X2 →
∨∨ ∧∧ X2 = #0 & n = 0
- | ∃∃V2. ❪G,K❫ ⊢ V ⬆*[h,n] V2 & ⇧*[1] V2 ≘ X2.
+ | ∃∃V2. ❪G,K❫ ⊢ V ⬆*[h,n] V2 & ⇧[1] V2 ≘ X2.
#h #n #G #K #V #X2 #H
elim (cpts_inv_lref_sn_drops … H) -H *
[ /3 width=1 by or_introl, conj/
lemma cpts_inv_ell_sn (h) (n) (G) (K) (V):
∀X2. ❪G,K.ⓛV❫ ⊢ #0 ⬆*[h,n] X2 →
∨∨ ∧∧ X2 = #0 & n = 0
- | ∃∃m,V2. ❪G,K❫ ⊢ V ⬆*[h,m] V2 & ⇧*[1] V2 ≘ X2 & n = ↑m.
+ | ∃∃m,V2. ❪G,K❫ ⊢ V ⬆*[h,m] V2 & ⇧[1] V2 ≘ X2 & n = ↑m.
#h #n #G #K #V #X2 #H
elim (cpts_inv_lref_sn_drops … H) -H *
[ /3 width=1 by or_introl, conj/
lemma cpts_inv_lref_sn (h) (n) (I) (G) (K) (i):
∀X2. ❪G,K.ⓘ[I]❫ ⊢ #↑i ⬆*[h,n] X2 →
∨∨ ∧∧ X2 = #↑i & n = 0
- | ∃∃T2. ❪G,K❫ ⊢ #i ⬆*[h,n] T2 & ⇧*[1] T2 ≘ X2.
+ | ∃∃T2. ❪G,K❫ ⊢ #i ⬆*[h,n] T2 & ⇧[1] T2 ≘ X2.
#h #n #I #G #K #i #X2 #H
elim (cpts_inv_lref_sn_drops … H) -H *
[ /3 width=1 by or_introl, conj/