(* Basic inversion lemmas ***************************************************)
-fact lsubv_inv_atom_sn_aux (a) (h) (G): ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 → L1 = ⋆ → L2 = ⋆.
+fact lsubv_inv_atom_sn_aux (a) (h) (G):
+ ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 → L1 = ⋆ → L2 = ⋆.
#a #h #G #L1 #L2 * -L1 -L2
[ //
| #I #L1 #L2 #_ #H destruct
qed-.
(* Basic_2A1: uses: lsubsv_inv_atom1 *)
-lemma lsubv_inv_atom_sn (a) (h) (G): ∀L2. G ⊢ ⋆ ⫃![a,h] L2 → L2 = ⋆.
+lemma lsubv_inv_atom_sn (a) (h) (G):
+ ∀L2. G ⊢ ⋆ ⫃![a,h] L2 → L2 = ⋆.
/2 width=6 by lsubv_inv_atom_sn_aux/ qed-.
fact lsubv_inv_bind_sn_aux (a) (h) (G): ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 →
- ∀I,K1. L1 = K1.ⓘ{I} →
- ∨∨ ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓘ{I}
- | ∃∃K2,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
- G ⊢ K1 ⫃![a,h] K2 &
- I = BPair Abbr (ⓝW.V) & L2 = K2.ⓛW.
+ ∀I,K1. L1 = K1.ⓘ{I} →
+ ∨∨ ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓘ{I}
+ | ∃∃K2,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] & G ⊢ K1 ⫃![a,h] K2
+ & I = BPair Abbr (ⓝW.V) & L2 = K2.ⓛW.
#a #h #G #L1 #L2 * -L1 -L2
[ #J #K1 #H destruct
| #I #L1 #L2 #HL12 #J #K1 #H destruct /3 width=3 by ex2_intro, or_introl/
qed-.
(* Basic_2A1: uses: lsubsv_inv_pair1 *)
-lemma lsubv_inv_bind_sn (a) (h) (G): ∀I,K1,L2. G ⊢ K1.ⓘ{I} ⫃![a,h] L2 →
- ∨∨ ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓘ{I}
- | ∃∃K2,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
- G ⊢ K1 ⫃![a,h] K2 &
- I = BPair Abbr (ⓝW.V) & L2 = K2.ⓛW.
+lemma lsubv_inv_bind_sn (a) (h) (G):
+ ∀I,K1,L2. G ⊢ K1.ⓘ{I} ⫃![a,h] L2 →
+ ∨∨ ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓘ{I}
+ | ∃∃K2,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] & G ⊢ K1 ⫃![a,h] K2
+ & I = BPair Abbr (ⓝW.V) & L2 = K2.ⓛW.
/2 width=3 by lsubv_inv_bind_sn_aux/ qed-.
-fact lsubv_inv_atom_dx_aux (a) (h) (G): ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 → L2 = ⋆ → L1 = ⋆.
+fact lsubv_inv_atom_dx_aux (a) (h) (G):
+ ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 → L2 = ⋆ → L1 = ⋆.
#a #h #G #L1 #L2 * -L1 -L2
[ //
| #I #L1 #L2 #_ #H destruct
qed-.
(* Basic_2A1: uses: lsubsv_inv_atom2 *)
-lemma lsubv_inv_atom2 (a) (h) (G): ∀L1. G ⊢ L1 ⫃![a,h] ⋆ → L1 = ⋆.
+lemma lsubv_inv_atom2 (a) (h) (G):
+ ∀L1. G ⊢ L1 ⫃![a,h] ⋆ → L1 = ⋆.
/2 width=6 by lsubv_inv_atom_dx_aux/ qed-.
-fact lsubv_inv_bind_dx_aux (a) (h) (G): ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 →
- ∀I,K2. L2 = K2.ⓘ{I} →
- ∨∨ ∃∃K1. G ⊢ K1 ⫃![a,h] K2 & L1 = K1.ⓘ{I}
- | ∃∃K1,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
- G ⊢ K1 ⫃![a,h] K2 & I = BPair Abst W & L1 = K1.ⓓⓝW.V.
+fact lsubv_inv_bind_dx_aux (a) (h) (G):
+ ∀L1,L2. G ⊢ L1 ⫃![a,h] L2 →
+ ∀I,K2. L2 = K2.ⓘ{I} →
+ ∨∨ ∃∃K1. G ⊢ K1 ⫃![a,h] K2 & L1 = K1.ⓘ{I}
+ | ∃∃K1,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
+ G ⊢ K1 ⫃![a,h] K2 & I = BPair Abst W & L1 = K1.ⓓⓝW.V.
#a #h #G #L1 #L2 * -L1 -L2
[ #J #K2 #H destruct
| #I #L1 #L2 #HL12 #J #K2 #H destruct /3 width=3 by ex2_intro, or_introl/
qed-.
(* Basic_2A1: uses: lsubsv_inv_pair2 *)
-lemma lsubv_inv_bind_dx (a) (h) (G): ∀I,L1,K2. G ⊢ L1 ⫃![a,h] K2.ⓘ{I} →
- ∨∨ ∃∃K1. G ⊢ K1 ⫃![a,h] K2 & L1 = K1.ⓘ{I}
- | ∃∃K1,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
- G ⊢ K1 ⫃![a,h] K2 & I = BPair Abst W & L1 = K1.ⓓⓝW.V.
+lemma lsubv_inv_bind_dx (a) (h) (G):
+ ∀I,L1,K2. G ⊢ L1 ⫃![a,h] K2.ⓘ{I} →
+ ∨∨ ∃∃K1. G ⊢ K1 ⫃![a,h] K2 & L1 = K1.ⓘ{I}
+ | ∃∃K1,W,V. ⦃G,K1⦄ ⊢ ⓝW.V ![a,h] &
+ G ⊢ K1 ⫃![a,h] K2 & I = BPair Abst W & L1 = K1.ⓓⓝW.V.
/2 width=3 by lsubv_inv_bind_dx_aux/ qed-.
(* Advanced inversion lemmas ************************************************)
-lemma lsubv_inv_abst_sn (a) (h) (G): ∀K1,L2,W. G ⊢ K1.ⓛW ⫃![a,h] L2 →
- ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓛW.
+lemma lsubv_inv_abst_sn (a) (h) (G):
+ ∀K1,L2,W. G ⊢ K1.ⓛW ⫃![a,h] L2 →
+ ∃∃K2. G ⊢ K1 ⫃![a,h] K2 & L2 = K2.ⓛW.
#a #h #G #K1 #L2 #W #H
elim (lsubv_inv_bind_sn … H) -H // *
#K2 #XW #XV #_ #_ #H1 #H2 destruct