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14
15 include "basic_2/rt_computation/csx_aaa.ma".
16 include "basic_2/rt_computation/fpbs_aaa.ma".
17 include "basic_2/rt_computation/fpbs_fpb.ma".
18 include "basic_2/rt_computation/fsb_csx.ma".
19
20 (* STRONGLY NORMALIZING CLOSURES FOR PARALLEL RST-TRANSITION ****************)
21
22 (* Main properties with atomic arity assignment for terms *******************)
23
24 theorem aaa_fsb (h):
25         ∀G,L,T,A. ❪G,L❫ ⊢ T ⁝ A → ≥𝐒[h] ❪G,L,T❫.
26 /3 width=2 by aaa_csx, csx_fsb/ qed.
27
28 (* Advanced eliminators with atomic arity assignment for terms **************)
29
30 fact aaa_ind_fpb_aux (h) (Q:relation3 …):
31      (∀G1,L1,T1,A.
32        ❪G1,L1❫ ⊢ T1 ⁝ A →
33        (∀G2,L2,T2. ❪G1,L1,T1❫ ≻[h] ❪G2,L2,T2❫ → Q G2 L2 T2) →
34        Q G1 L1 T1
35      ) →
36      ∀G,L,T. ❪G,L❫ ⊢ ⬈*𝐒[h] T → ∀A. ❪G,L❫ ⊢ T ⁝ A →  Q G L T.
37 #h #R #IH #G #L #T #H @(csx_ind_fpb … H) -G -L -T
38 #G1 #L1 #T1 #H1 #IH1 #A1 #HTA1 @IH -IH //
39 #G2 #L2 #T2 #H12 elim (fpbs_aaa_conf … G2 … L2 … T2 … HTA1) -A1
40 /2 width=2 by fpb_fpbs/
41 qed-.
42
43 lemma aaa_ind_fpb (h) (Q:relation3 …):
44       (∀G1,L1,T1,A.
45         ❪G1,L1❫ ⊢ T1 ⁝ A →
46         (∀G2,L2,T2. ❪G1,L1,T1❫ ≻[h] ❪G2,L2,T2❫ → Q G2 L2 T2) →
47         Q G1 L1 T1
48       ) →
49       ∀G,L,T,A. ❪G,L❫ ⊢ T ⁝ A → Q G L T.
50 /4 width=4 by aaa_ind_fpb_aux, aaa_csx/ qed-.
51
52 fact aaa_ind_fpbg_aux (h) (Q:relation3 …):
53      (∀G1,L1,T1,A.
54        ❪G1,L1❫ ⊢ T1 ⁝ A →
55        (∀G2,L2,T2. ❪G1,L1,T1❫ >[h] ❪G2,L2,T2❫ → Q G2 L2 T2) →
56        Q G1 L1 T1
57      ) →
58      ∀G,L,T. ❪G,L❫ ⊢ ⬈*𝐒[h] T → ∀A. ❪G,L❫ ⊢ T ⁝ A →  Q G L T.
59 #h #Q #IH #G #L #T #H @(csx_ind_fpbg … H) -G -L -T
60 #G1 #L1 #T1 #H1 #IH1 #A1 #HTA1 @IH -IH //
61 #G2 #L2 #T2 #H12 elim (fpbs_aaa_conf … G2 … L2 … T2 … HTA1) -A1
62 /2 width=2 by fpbg_fwd_fpbs/
63 qed-.
64
65 lemma aaa_ind_fpbg (h) (Q:relation3 …):
66       (∀G1,L1,T1,A.
67         ❪G1,L1❫ ⊢ T1 ⁝ A →
68         (∀G2,L2,T2. ❪G1,L1,T1❫ >[h] ❪G2,L2,T2❫ → Q G2 L2 T2) →
69         Q G1 L1 T1
70       ) →
71       ∀G,L,T,A. ❪G,L❫ ⊢ T ⁝ A → Q G L T.
72 /4 width=4 by aaa_ind_fpbg_aux, aaa_csx/ qed-.