inductive jsx (h) (G): relation lenv ≝
| jsx_atom: jsx h G (⋆) (⋆)
| jsx_bind: ∀I,K1,K2. jsx h G K1 K2 →
- jsx h G (K1.ⓘ{I}) (K2.ⓘ{I})
+ jsx h G (K1.ⓘ[I]) (K2.ⓘ[I])
| jsx_pair: ∀I,K1,K2,V. jsx h G K1 K2 →
- G â\8a¢ â¬\88*[h,V] ð\9d\90\92â¦\83K2â¦\84 â\86\92 jsx h G (K1.â\93\91{I}V) (K2.ⓧ)
+ G â\8a¢ â¬\88*[h,V] ð\9d\90\92â\9dªK2â\9d« â\86\92 jsx h G (K1.â\93\91[I]V) (K2.ⓧ)
.
interpretation
fact jsx_inv_bind_sn_aux (h) (G):
∀L1,L2. G ⊢ L1 ⊒[h] L2 →
- ∀I,K1. L1 = K1.ⓘ{I} →
- ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ{I}
- | â\88\83â\88\83J,K2,V. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â¦\83K2â¦\84 & I = BPair J V & L2 = K2.ⓧ.
+ ∀I,K1. L1 = K1.ⓘ[I] →
+ ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ[I]
+ | â\88\83â\88\83J,K2,V. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â\9dªK2â\9d« & I = BPair J V & L2 = K2.ⓧ.
#h #G #L1 #L2 * -L1 -L2
[ #J #L1 #H destruct
| #I #K1 #K2 #HK12 #J #L1 #H destruct /3 width=3 by ex2_intro, or_introl/
qed-.
lemma jsx_inv_bind_sn (h) (G):
- ∀I,K1,L2. G ⊢ K1.ⓘ{I} ⊒[h] L2 →
- ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ{I}
- | â\88\83â\88\83J,K2,V. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â¦\83K2â¦\84 & I = BPair J V & L2 = K2.ⓧ.
+ ∀I,K1,L2. G ⊢ K1.ⓘ[I] ⊒[h] L2 →
+ ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ[I]
+ | â\88\83â\88\83J,K2,V. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â\9dªK2â\9d« & I = BPair J V & L2 = K2.ⓧ.
/2 width=3 by jsx_inv_bind_sn_aux/ qed-.
(* Advanced inversion lemmas ************************************************)
(* Basic_2A1: uses: lcosx_inv_pair *)
lemma jsx_inv_pair_sn (h) (G):
- ∀I,K1,L2,V. G ⊢ K1.ⓑ{I}V ⊒[h] L2 →
- ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓑ{I}V
- | â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â¦\83K2â¦\84 & L2 = K2.ⓧ.
+ ∀I,K1,L2,V. G ⊢ K1.ⓑ[I]V ⊒[h] L2 →
+ ∨∨ ∃∃K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓑ[I]V
+ | â\88\83â\88\83K2. G â\8a¢ K1 â\8a\92[h] K2 & G â\8a¢ â¬\88*[h,V] ð\9d\90\92â\9dªK2â\9d« & L2 = K2.ⓧ.
#h #G #I #K1 #L2 #V #H elim (jsx_inv_bind_sn … H) -H *
[ /3 width=3 by ex2_intro, or_introl/
| #J #K2 #X #HK12 #HX #H1 #H2 destruct /3 width=4 by ex3_intro, or_intror/
(* Advanced forward lemmas **************************************************)
lemma jsx_fwd_bind_sn (h) (G):
- ∀I1,K1,L2. G ⊢ K1.ⓘ{I1} ⊒[h] L2 →
- ∃∃I2,K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ{I2}.
+ ∀I1,K1,L2. G ⊢ K1.ⓘ[I1] ⊒[h] L2 →
+ ∃∃I2,K2. G ⊢ K1 ⊒[h] K2 & L2 = K2.ⓘ[I2].
#h #G #I1 #K1 #L2 #H elim (jsx_inv_bind_sn … H) -H *
/2 width=4 by ex2_2_intro/
qed-.