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15 include "basic_2/notation/relations/atomicarity_3.ma".
16 include "basic_2/grammar/aarity.ma".
17 include "basic_2/relocation/ldrop.ma".
19 (* ATONIC ARITY ASSIGNMENT ON TERMS *****************************************)
21 inductive aaa: lenv → term → predicate aarity ≝
22 | aaa_sort: ∀L,k. aaa L (⋆k) (⓪)
23 | aaa_lref: ∀I,L,K,V,B,i. ⇩[0, i] L ≡ K. ⓑ{I} V → aaa K V B → aaa L (#i) B
24 | aaa_abbr: ∀a,L,V,T,B,A.
25 aaa L V B → aaa (L. ⓓV) T A → aaa L (ⓓ{a}V. T) A
26 | aaa_abst: ∀a,L,V,T,B,A.
27 aaa L V B → aaa (L. ⓛV) T A → aaa L (ⓛ{a}V. T) (②B. A)
28 | aaa_appl: ∀L,V,T,B,A. aaa L V B → aaa L T (②B. A) → aaa L (ⓐV. T) A
29 | aaa_cast: ∀L,V,T,A. aaa L V A → aaa L T A → aaa L (ⓝV. T) A
32 interpretation "atomic arity assignment (term)"
33 'AtomicArity L T A = (aaa L T A).
35 (* Basic inversion lemmas ***************************************************)
37 fact aaa_inv_sort_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀k. T = ⋆k → A = ⓪.
40 | #I #L #K #V #B #i #_ #_ #k #H destruct
41 | #a #L #V #T #B #A #_ #_ #k #H destruct
42 | #a #L #V #T #B #A #_ #_ #k #H destruct
43 | #L #V #T #B #A #_ #_ #k #H destruct
44 | #L #V #T #A #_ #_ #k #H destruct
48 lemma aaa_inv_sort: ∀L,A,k. ⦃G, L⦄ ⊢ ⋆k ⁝ A → A = ⓪.
51 fact aaa_inv_lref_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀i. T = #i →
52 ∃∃I,K,V. ⇩[0, i] L ≡ K. ⓑ{I} V & K ⊢ V ⁝ A.
54 [ #L #k #i #H destruct
55 | #I #L #K #V #B #j #HLK #HB #i #H destruct /2 width=5/
56 | #a #L #V #T #B #A #_ #_ #i #H destruct
57 | #a #L #V #T #B #A #_ #_ #i #H destruct
58 | #L #V #T #B #A #_ #_ #i #H destruct
59 | #L #V #T #A #_ #_ #i #H destruct
63 lemma aaa_inv_lref: ∀L,A,i. ⦃G, L⦄ ⊢ #i ⁝ A →
64 ∃∃I,K,V. ⇩[0, i] L ≡ K. ⓑ{I} V & K ⊢ V ⁝ A.
67 fact aaa_inv_gref_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀p. T = §p → ⊥.
69 [ #L #k #q #H destruct
70 | #I #L #K #V #B #i #HLK #HB #q #H destruct
71 | #a #L #V #T #B #A #_ #_ #q #H destruct
72 | #a #L #V #T #B #A #_ #_ #q #H destruct
73 | #L #V #T #B #A #_ #_ #q #H destruct
74 | #L #V #T #A #_ #_ #q #H destruct
78 lemma aaa_inv_gref: ∀L,A,p. ⦃G, L⦄ ⊢ §p ⁝ A → ⊥.
81 fact aaa_inv_abbr_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀a,W,U. T = ⓓ{a}W. U →
82 ∃∃B. ⦃G, L⦄ ⊢ W ⁝ B & L. ⓓW ⊢ U ⁝ A.
84 [ #L #k #a #W #U #H destruct
85 | #I #L #K #V #B #i #_ #_ #a #W #U #H destruct
86 | #b #L #V #T #B #A #HV #HT #a #W #U #H destruct /2 width=2/
87 | #b #L #V #T #B #A #_ #_ #a #W #U #H destruct
88 | #L #V #T #B #A #_ #_ #a #W #U #H destruct
89 | #L #V #T #A #_ #_ #a #W #U #H destruct
93 lemma aaa_inv_abbr: ∀a,L,V,T,A. ⦃G, L⦄ ⊢ ⓓ{a}V. T ⁝ A →
94 ∃∃B. ⦃G, L⦄ ⊢ V ⁝ B & L. ⓓV ⊢ T ⁝ A.
97 fact aaa_inv_abst_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀a,W,U. T = ⓛ{a}W. U →
98 ∃∃B1,B2. ⦃G, L⦄ ⊢ W ⁝ B1 & L. ⓛW ⊢ U ⁝ B2 & A = ②B1. B2.
100 [ #L #k #a #W #U #H destruct
101 | #I #L #K #V #B #i #_ #_ #a #W #U #H destruct
102 | #b #L #V #T #B #A #_ #_ #a #W #U #H destruct
103 | #b #L #V #T #B #A #HV #HT #a #W #U #H destruct /2 width=5/
104 | #L #V #T #B #A #_ #_ #a #W #U #H destruct
105 | #L #V #T #A #_ #_ #a #W #U #H destruct
109 lemma aaa_inv_abst: ∀a,L,W,T,A. ⦃G, L⦄ ⊢ ⓛ{a}W. T ⁝ A →
110 ∃∃B1,B2. ⦃G, L⦄ ⊢ W ⁝ B1 & L. ⓛW ⊢ T ⁝ B2 & A = ②B1. B2.
113 fact aaa_inv_appl_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀W,U. T = ⓐW. U →
114 ∃∃B. ⦃G, L⦄ ⊢ W ⁝ B & ⦃G, L⦄ ⊢ U ⁝ ②B. A.
116 [ #L #k #W #U #H destruct
117 | #I #L #K #V #B #i #_ #_ #W #U #H destruct
118 | #a #L #V #T #B #A #_ #_ #W #U #H destruct
119 | #a #L #V #T #B #A #_ #_ #W #U #H destruct
120 | #L #V #T #B #A #HV #HT #W #U #H destruct /2 width=3/
121 | #L #V #T #A #_ #_ #W #U #H destruct
125 lemma aaa_inv_appl: ∀L,V,T,A. ⦃G, L⦄ ⊢ ⓐV. T ⁝ A →
126 ∃∃B. ⦃G, L⦄ ⊢ V ⁝ B & ⦃G, L⦄ ⊢ T ⁝ ②B. A.
129 fact aaa_inv_cast_aux: ∀L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ∀W,U. T = ⓝW. U →
130 ⦃G, L⦄ ⊢ W ⁝ A ∧ ⦃G, L⦄ ⊢ U ⁝ A.
132 [ #L #k #W #U #H destruct
133 | #I #L #K #V #B #i #_ #_ #W #U #H destruct
134 | #a #L #V #T #B #A #_ #_ #W #U #H destruct
135 | #a #L #V #T #B #A #_ #_ #W #U #H destruct
136 | #L #V #T #B #A #_ #_ #W #U #H destruct
137 | #L #V #T #A #HV #HT #W #U #H destruct /2 width=1/
141 lemma aaa_inv_cast: ∀L,W,T,A. ⦃G, L⦄ ⊢ ⓝW. T ⁝ A →
142 ⦃G, L⦄ ⊢ W ⁝ A ∧ ⦃G, L⦄ ⊢ T ⁝ A.