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Theorem eqgval 17583
Description: Value of the subgroup left coset equivalence relation. (Contributed by Mario Carneiro, 15-Jan-2015.) (Revised by Mario Carneiro, 14-Jun-2015.)
Hypotheses
Ref Expression
eqgval.x 𝑋 = (Base‘𝐺)
eqgval.n 𝑁 = (invg𝐺)
eqgval.p + = (+g𝐺)
eqgval.r 𝑅 = (𝐺 ~QG 𝑆)
Assertion
Ref Expression
eqgval ((𝐺𝑉𝑆𝑋) → (𝐴𝑅𝐵 ↔ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))

Proof of Theorem eqgval
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqgval.x . . . 4 𝑋 = (Base‘𝐺)
2 eqgval.n . . . 4 𝑁 = (invg𝐺)
3 eqgval.p . . . 4 + = (+g𝐺)
4 eqgval.r . . . 4 𝑅 = (𝐺 ~QG 𝑆)
51, 2, 3, 4eqgfval 17582 . . 3 ((𝐺𝑉𝑆𝑋) → 𝑅 = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)})
65breqd 4634 . 2 ((𝐺𝑉𝑆𝑋) → (𝐴𝑅𝐵𝐴{⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}𝐵))
7 brabv 6664 . . . 4 (𝐴{⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}𝐵 → (𝐴 ∈ V ∧ 𝐵 ∈ V))
87adantl 482 . . 3 (((𝐺𝑉𝑆𝑋) ∧ 𝐴{⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}𝐵) → (𝐴 ∈ V ∧ 𝐵 ∈ V))
9 simpr1 1065 . . . . 5 (((𝐺𝑉𝑆𝑋) ∧ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)) → 𝐴𝑋)
10 elex 3202 . . . . 5 (𝐴𝑋𝐴 ∈ V)
119, 10syl 17 . . . 4 (((𝐺𝑉𝑆𝑋) ∧ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)) → 𝐴 ∈ V)
12 simpr2 1066 . . . . 5 (((𝐺𝑉𝑆𝑋) ∧ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)) → 𝐵𝑋)
13 elex 3202 . . . . 5 (𝐵𝑋𝐵 ∈ V)
1412, 13syl 17 . . . 4 (((𝐺𝑉𝑆𝑋) ∧ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)) → 𝐵 ∈ V)
1511, 14jca 554 . . 3 (((𝐺𝑉𝑆𝑋) ∧ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)) → (𝐴 ∈ V ∧ 𝐵 ∈ V))
16 vex 3193 . . . . . . . 8 𝑥 ∈ V
17 vex 3193 . . . . . . . 8 𝑦 ∈ V
1816, 17prss 4326 . . . . . . 7 ((𝑥𝑋𝑦𝑋) ↔ {𝑥, 𝑦} ⊆ 𝑋)
19 eleq1 2686 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝑋𝐴𝑋))
20 eleq1 2686 . . . . . . . 8 (𝑦 = 𝐵 → (𝑦𝑋𝐵𝑋))
2119, 20bi2anan9 916 . . . . . . 7 ((𝑥 = 𝐴𝑦 = 𝐵) → ((𝑥𝑋𝑦𝑋) ↔ (𝐴𝑋𝐵𝑋)))
2218, 21syl5bbr 274 . . . . . 6 ((𝑥 = 𝐴𝑦 = 𝐵) → ({𝑥, 𝑦} ⊆ 𝑋 ↔ (𝐴𝑋𝐵𝑋)))
23 fveq2 6158 . . . . . . . 8 (𝑥 = 𝐴 → (𝑁𝑥) = (𝑁𝐴))
24 id 22 . . . . . . . 8 (𝑦 = 𝐵𝑦 = 𝐵)
2523, 24oveqan12d 6634 . . . . . . 7 ((𝑥 = 𝐴𝑦 = 𝐵) → ((𝑁𝑥) + 𝑦) = ((𝑁𝐴) + 𝐵))
2625eleq1d 2683 . . . . . 6 ((𝑥 = 𝐴𝑦 = 𝐵) → (((𝑁𝑥) + 𝑦) ∈ 𝑆 ↔ ((𝑁𝐴) + 𝐵) ∈ 𝑆))
2722, 26anbi12d 746 . . . . 5 ((𝑥 = 𝐴𝑦 = 𝐵) → (({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆) ↔ ((𝐴𝑋𝐵𝑋) ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))
28 df-3an 1038 . . . . 5 ((𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆) ↔ ((𝐴𝑋𝐵𝑋) ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆))
2927, 28syl6bbr 278 . . . 4 ((𝑥 = 𝐴𝑦 = 𝐵) → (({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆) ↔ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))
30 eqid 2621 . . . 4 {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)} = {⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}
3129, 30brabga 4959 . . 3 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴{⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}𝐵 ↔ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))
328, 15, 31pm5.21nd 940 . 2 ((𝐺𝑉𝑆𝑋) → (𝐴{⟨𝑥, 𝑦⟩ ∣ ({𝑥, 𝑦} ⊆ 𝑋 ∧ ((𝑁𝑥) + 𝑦) ∈ 𝑆)}𝐵 ↔ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))
336, 32bitrd 268 1 ((𝐺𝑉𝑆𝑋) → (𝐴𝑅𝐵 ↔ (𝐴𝑋𝐵𝑋 ∧ ((𝑁𝐴) + 𝐵) ∈ 𝑆)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384  w3a 1036   = wceq 1480  wcel 1987  Vcvv 3190  wss 3560  {cpr 4157   class class class wbr 4623  {copab 4682  cfv 5857  (class class class)co 6615  Basecbs 15800  +gcplusg 15881  invgcminusg 17363   ~QG cqg 17530
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-sep 4751  ax-nul 4759  ax-pow 4813  ax-pr 4877  ax-un 6914
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2913  df-rex 2914  df-rab 2917  df-v 3192  df-sbc 3423  df-dif 3563  df-un 3565  df-in 3567  df-ss 3574  df-nul 3898  df-if 4065  df-pw 4138  df-sn 4156  df-pr 4158  df-op 4162  df-uni 4410  df-br 4624  df-opab 4684  df-id 4999  df-xp 5090  df-rel 5091  df-cnv 5092  df-co 5093  df-dm 5094  df-iota 5820  df-fun 5859  df-fv 5865  df-ov 6618  df-oprab 6619  df-mpt2 6620  df-eqg 17533
This theorem is referenced by:  eqger  17584  eqglact  17585  eqgid  17586  eqgcpbl  17588  gastacos  17683  orbstafun  17684  sylow2blem1  17975  sylow2blem3  17977  eqgabl  18180  tgpconncompeqg  21855  tgpconncomp  21856  qustgpopn  21863
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