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Theorem ndmord 3064
Description: Elimination of redundant antecedents in an ordering law.
Hypotheses
Ref Expression
ndmopr.1 BV
ndmopr.2 dom F = (S × S)
ndmord.3 AV
ndmord.4 R ⊆ (S × S)
ndmord.5 ¬ ∅ ∈ S
ndmord.6 ((ASBSCS) → (ARB ↔ (CFA)R(CFB)))
Assertion
Ref Expression
ndmord (CS → (ARB ↔ (CFA)R(CFB)))

Proof of Theorem ndmord
StepHypRef Expression
1 ndmord.6 . . . 4 ((ASBSCS) → (ARB ↔ (CFA)R(CFB)))
213exp 611 . . 3 (AS → (BS → (CS → (ARB ↔ (CFA)R(CFB)))))
32imp 277 . 2 ((ASBS) → (CS → (ARB ↔ (CFA)R(CFB))))
4 ndmopr.1 . . . . 5 BV
5 ndmord.4 . . . . 5 R ⊆ (S × S)
64, 5brel 2459 . . . 4 (ARB → (ASBS))
7 oprex 3018 . . . . . 6 (CFB) ∈ V
87, 5brel 2459 . . . . 5 ((CFA)R(CFB) → ((CFA) ∈ S ∧ (CFB) ∈ S))
9 ndmord.3 . . . . . . . 8 AV
10 ndmopr.2 . . . . . . . 8 dom F = (S × S)
11 ndmord.5 . . . . . . . 8 ¬ ∅ ∈ S
129, 10, 11ndmoprrcl 3060 . . . . . . 7 ((CFA) ∈ S → (CSAS))
1312pm3.27d 262 . . . . . 6 ((CFA) ∈ SAS)
144, 10, 11ndmoprrcl 3060 . . . . . . 7 ((CFB) ∈ S → (CSBS))
1514pm3.27d 262 . . . . . 6 ((CFB) ∈ SBS)
1613, 15anim12i 268 . . . . 5 (((CFA) ∈ S ∧ (CFB) ∈ S) → (ASBS))
178, 16syl 12 . . . 4 ((CFA)R(CFB) → (ASBS))
186, 17pm5.21ni 503 . . 3 (¬ (ASBS) → (ARB ↔ (CFA)R(CFB)))
1918a1d 14 . 2 (¬ (ASBS) → (CS → (ARB ↔ (CFA)R(CFB))))
203, 19pm2.61i 110 1 (CS → (ARB ↔ (CFA)R(CFB)))
Colors of variables: wff set class
Syntax hints:  ¬ wn 1   → wi 2   ↔ wb 127   ∧ wa 196   ∧ w3a 581   = wceq 1091   ∈ wcel 1092  Vcvv 1348   ⊆ wss 1487  ∅c0 1707   class class class wbr 2054   × cxp 2408  dom cdm 2410  (class class class)co 3001
This theorem is referenced by:  ltapi 3824  ltmpi 3825  ltapq 3870  ltmpq 3871  ltapr 3945  ltasr 4003
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-un 1076  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-3an 583  df-ex 679  df-sb 853  df-eu 1009  df-mo 1010  df-clab 1093  df-cleq 1097  df-clel 1099  df-rex 1206  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-uni 1920  df-br 2063  df-opab 2098  df-xp 2424  df-cnv 2426  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431  df-fv 2438  df-opr 3003
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