(* Advanced inversion lemmas ************************************************)
(* Basic_2A1: includes: cpr_inv_atom1 *)
-lemma cpr_inv_atom1_drops: ∀h,I,G,L,T2. ⦃G, L⦄ ⊢ ⓪{I} ➡[h] T2 →
+lemma cpr_inv_atom1_drops: ∀h,I,G,L,T2. ⦃G,L⦄ ⊢ ⓪{I} ➡[h] T2 →
∨∨ T2 = ⓪{I}
- | â\88\83â\88\83K,V,V2,i. â¬\87*[i] L â\89¡ K.â\93\93V & â¦\83G, K⦄ ⊢ V ➡[h] V2 &
- â¬\86*[⫯i] V2 â\89¡ T2 & I = LRef i.
+ | â\88\83â\88\83K,V,V2,i. â¬\87*[i] L â\89\98 K.â\93\93V & â¦\83G,K⦄ ⊢ V ➡[h] V2 &
+ â¬\86*[â\86\91i] V2 â\89\98 T2 & I = LRef i.
#h #I #G #L #T2 #H elim (cpm_inv_atom1_drops … H) -H *
[ /2 width=1 by or_introl/
| #s #_ #_ #H destruct
(* Basic_1: includes: pr0_gen_lref pr2_gen_lref *)
(* Basic_2A1: includes: cpr_inv_lref1 *)
-lemma cpr_inv_lref1_drops: ∀h,G,L,T2,i. ⦃G, L⦄ ⊢ #i ➡[h] T2 →
+lemma cpr_inv_lref1_drops: ∀h,G,L,T2,i. ⦃G,L⦄ ⊢ #i ➡[h] T2 →
∨∨ T2 = #i
- | â\88\83â\88\83K,V,V2. â¬\87*[i] L â\89¡ K. â\93\93V & â¦\83G, K⦄ ⊢ V ➡[h] V2 &
- â¬\86*[⫯i] V2 â\89¡ T2.
+ | â\88\83â\88\83K,V,V2. â¬\87*[i] L â\89\98 K. â\93\93V & â¦\83G,K⦄ ⊢ V ➡[h] V2 &
+ â¬\86*[â\86\91i] V2 â\89\98 T2.
#h #G #L #T2 #i #H elim (cpm_inv_lref1_drops … H) -H *
[ /2 width=1 by or_introl/
| /3 width=6 by ex3_3_intro, or_intror/