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14
15 include "static_2/static/feqg_fqup.ma".
16 include "basic_2/rt_transition/fpb_feqg.ma".
17 include "basic_2/rt_computation/fpbs_fqup.ma".
18
19 (* PARALLEL RST-COMPUTATION FOR CLOSURES ************************************)
20
21 (* Propreties with generic equivalence on referred closures *****************)
22
23 (* Basic_2A1: uses: lleq_fpbs fleq_fpbs *)
24 lemma feqg_fpbs (S) (G1) (G2) (L1) (L2) (T1) (T2):
25       reflexive … S → symmetric … S →
26       ❪G1,L1,T1❫ ≛[S] ❪G2,L2,T2❫ → ❪G1,L1,T1❫ ≥ ❪G2,L2,T2❫.
27 /3 width=5 by fpb_fpbs, feqg_fpb/ qed.
28
29 (* Basic_2A1: uses: fpbs_lleq_trans *)
30 lemma fpbs_feqg_trans (S) (G) (L) (T):
31       reflexive … S → symmetric … S →
32       ∀G1,L1,T1. ❪G1,L1,T1❫ ≥ ❪G,L,T❫ →
33       ∀G2,L2,T2. ❪G,L,T❫ ≛[S] ❪G2,L2,T2❫ → ❪G1,L1,T1❫ ≥ ❪G2,L2,T2❫.
34 /3 width=9 by fpbs_strap1, feqg_fpb/ qed-.
35
36 (* Basic_2A1: uses: lleq_fpbs_trans *)
37 lemma feqg_fpbs_trans (S) (G) (L) (T):
38       reflexive … S → symmetric … S →
39       ∀G2,L2,T2. ❪G,L,T❫ ≥ ❪G2,L2,T2❫ →
40       ∀G1,L1,T1. ❪G1,L1,T1❫ ≛[S] ❪G,L,T❫ → ❪G1,L1,T1❫ ≥ ❪G2,L2,T2❫.
41 /3 width=5 by fpbs_strap2, feqg_fpb/ qed-.
42
43 lemma teqg_fpbs_trans (S) (T):
44       reflexive … S → symmetric … S →
45       ∀T1. T1 ≛[S] T →
46       ∀G1,G2,L1,L2,T2. ❪G1,L1,T❫ ≥ ❪G2,L2,T2❫ → ❪G1,L1,T1❫ ≥ ❪G2,L2,T2❫.
47 /3 width=8 by feqg_fpbs_trans, teqg_feqg/ qed-.
48
49 lemma fpbs_teqg_trans (S) (T):
50       reflexive … S → symmetric … S →
51       ∀G1,G2,L1,L2,T1. ❪G1,L1,T1❫ ≥ ❪G2,L2,T❫ →
52       ∀T2. T ≛[S] T2 → ❪G1,L1,T1❫ ≥ ❪G2,L2,T2❫.
53 /3 width=8 by fpbs_feqg_trans, teqg_feqg/ qed-.