| ∃∃s. T2 = ⋆(next h s) & I = Sort s & n = 1
| ∃∃K,V,V2,i. ⬇*[i] L ≡ K.ⓓV & ⦃G, K⦄ ⊢ V ➡[n, h] V2 &
⬆*[⫯i] V2 ≡ T2 & I = LRef i
- | ∃∃k,K,V,V2,i. ⬇*[i] L ≡ K.ⓛV & ⦃G, K⦄ ⊢ V ➡[k, h] V2 &
- ⬆*[⫯i] V2 ≡ T2 & I = LRef i & n = ⫯k.
+ | ∃∃m,K,V,V2,i. ⬇*[i] L ≡ K.ⓛV & ⦃G, K⦄ ⊢ V ➡[m, h] V2 &
+ ⬆*[⫯i] V2 ≡ T2 & I = LRef i & n = ⫯m.
#n #h #I #G #L #T2 * #c #Hc #H elim (cpg_inv_atom1_drops … H) -H *
[ #H1 #H2 destruct lapply (isrt_inv_00 … Hc) -Hc
/3 width=1 by or4_intro0, conj/
lemma cpm_inv_lref1_drops: ∀n,h,G,L,T2,i. ⦃G, L⦄ ⊢ #i ➡[n, h] T2 →
∨∨ T2 = #i ∧ n = 0
- | ∃∃K,V,V2. ⬇*[i] L ≡ K. ⓓV & ⦃G, K⦄ ⊢ V ➡[n, h] V2 &
+ | ∃∃K,V,V2. ⬇*[i] L ≡ K.ⓓV & ⦃G, K⦄ ⊢ V ➡[n, h] V2 &
⬆*[⫯i] V2 ≡ T2
- | ∃∃k,K,V,V2. ⬇*[i] L ≡ K. ⓛV & ⦃G, K⦄ ⊢ V ➡[k, h] V2 &
- ⬆*[⫯i] V2 ≡ T2 & n = ⫯k.
+ | ∃∃m,K,V,V2. ⬇*[i] L ≡ K. ⓛV & ⦃G, K⦄ ⊢ V ➡[m, h] V2 &
+ ⬆*[⫯i] V2 ≡ T2 & n = ⫯m.
#n #h #G #L #T2 #i * #c #Hc #H elim (cpg_inv_lref1_drops … H) -H *
[ #H1 #H2 destruct lapply (isrt_inv_00 … Hc) -Hc
/3 width=1 by or3_intro0, conj/
(* Basic_1: includes: pr0_lift pr2_lift *)
(* Basic_2A1: includes: cpr_lift *)
-lemma cpm_lifts: ∀n,h,G. d_liftable2 (cpm n h G).
+lemma cpm_lifts_sn: ∀n,h,G. d_liftable2_sn … lifts (cpm n h G).
#n #h #G #K #T1 #T2 * #c #Hc #HT12 #b #f #L #HLK #U1 #HTU1
-elim (cpg_lifts … HT12 … HLK … HTU1) -K -T1
+elim (cpg_lifts_sn … HT12 … HLK … HTU1) -K -T1
/3 width=5 by ex2_intro/
qed-.
+lemma cpm_lifts_bi: ∀n,h,G. d_liftable2_bi … lifts (cpm n h G).
+#n #h #G #K #T1 #T2 * /3 width=11 by cpg_lifts_bi, ex2_intro/
+qed-.
+
(* Inversion lemmas with generic slicing for local environments *************)
(* Basic_1: includes: pr0_gen_lift pr2_gen_lift *)
(* Basic_2A1: includes: cpr_inv_lift1 *)
-lemma cpm_inv_lifts1: ∀n,h,G. d_deliftable2_sn (cpm n h G).
+lemma cpm_inv_lifts_sn: ∀n,h,G. d_deliftable2_sn … lifts (cpm n h G).
#n #h #G #L #U1 #U2 * #c #Hc #HU12 #b #f #K #HLK #T1 #HTU1
-elim (cpg_inv_lifts1 … HU12 … HLK … HTU1) -L -U1
+elim (cpg_inv_lifts_sn … HU12 … HLK … HTU1) -L -U1
/3 width=5 by ex2_intro/
qed-.
+
+lemma cpm_inv_lifts_bi: ∀n,h,G. d_deliftable2_bi … lifts (cpm n h G).
+#n #h #G #L #U1 #U2 * /3 width=11 by cpg_inv_lifts_bi, ex2_intro/
+qed-.