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Theorem brtposg 6117
Description: The transposition swaps arguments of a three-parameter relation. (Contributed by Jim Kingdon, 31-Jan-2019.)
Assertion
Ref Expression
brtposg ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))

Proof of Theorem brtposg
StepHypRef Expression
1 opswapg 4993 . . . . 5 ((𝐴𝑉𝐵𝑊) → {⟨𝐴, 𝐵⟩} = ⟨𝐵, 𝐴⟩)
21breq1d 3907 . . . 4 ((𝐴𝑉𝐵𝑊) → ( {⟨𝐴, 𝐵⟩}𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
323adant3 984 . . 3 ((𝐴𝑉𝐵𝑊𝐶𝑋) → ( {⟨𝐴, 𝐵⟩}𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
43anbi2d 457 . 2 ((𝐴𝑉𝐵𝑊𝐶𝑋) → ((⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}) ∧ {⟨𝐴, 𝐵⟩}𝐹𝐶) ↔ (⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}) ∧ ⟨𝐵, 𝐴𝐹𝐶)))
5 brtpos2 6114 . . 3 (𝐶𝑋 → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ (⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}) ∧ {⟨𝐴, 𝐵⟩}𝐹𝐶)))
653ad2ant3 987 . 2 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ (⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}) ∧ {⟨𝐴, 𝐵⟩}𝐹𝐶)))
7 opexg 4118 . . . . . . . . 9 ((𝐵𝑊𝐴𝑉) → ⟨𝐵, 𝐴⟩ ∈ V)
87ancoms 266 . . . . . . . 8 ((𝐴𝑉𝐵𝑊) → ⟨𝐵, 𝐴⟩ ∈ V)
98anim1i 336 . . . . . . 7 (((𝐴𝑉𝐵𝑊) ∧ 𝐶𝑋) → (⟨𝐵, 𝐴⟩ ∈ V ∧ 𝐶𝑋))
1093impa 1159 . . . . . 6 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐵, 𝐴⟩ ∈ V ∧ 𝐶𝑋))
11 breldmg 4713 . . . . . . 7 ((⟨𝐵, 𝐴⟩ ∈ V ∧ 𝐶𝑋 ∧ ⟨𝐵, 𝐴𝐹𝐶) → ⟨𝐵, 𝐴⟩ ∈ dom 𝐹)
12113expia 1166 . . . . . 6 ((⟨𝐵, 𝐴⟩ ∈ V ∧ 𝐶𝑋) → (⟨𝐵, 𝐴𝐹𝐶 → ⟨𝐵, 𝐴⟩ ∈ dom 𝐹))
1310, 12syl 14 . . . . 5 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐵, 𝐴𝐹𝐶 → ⟨𝐵, 𝐴⟩ ∈ dom 𝐹))
14 opelcnvg 4687 . . . . . 6 ((𝐴𝑉𝐵𝑊) → (⟨𝐴, 𝐵⟩ ∈ dom 𝐹 ↔ ⟨𝐵, 𝐴⟩ ∈ dom 𝐹))
15143adant3 984 . . . . 5 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐴, 𝐵⟩ ∈ dom 𝐹 ↔ ⟨𝐵, 𝐴⟩ ∈ dom 𝐹))
1613, 15sylibrd 168 . . . 4 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐵, 𝐴𝐹𝐶 → ⟨𝐴, 𝐵⟩ ∈ dom 𝐹))
17 elun1 3211 . . . 4 (⟨𝐴, 𝐵⟩ ∈ dom 𝐹 → ⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}))
1816, 17syl6 33 . . 3 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐵, 𝐴𝐹𝐶 → ⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅})))
1918pm4.71rd 389 . 2 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐵, 𝐴𝐹𝐶 ↔ (⟨𝐴, 𝐵⟩ ∈ (dom 𝐹 ∪ {∅}) ∧ ⟨𝐵, 𝐴𝐹𝐶)))
204, 6, 193bitr4d 219 1 ((𝐴𝑉𝐵𝑊𝐶𝑋) → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wb 104  w3a 945  wcel 1463  Vcvv 2658  cun 3037  c0 3331  {csn 3495  cop 3498   cuni 3704   class class class wbr 3897  ccnv 4506  dom cdm 4507  tpos ctpos 6107
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 681  ax-5 1406  ax-7 1407  ax-gen 1408  ax-ie1 1452  ax-ie2 1453  ax-8 1465  ax-10 1466  ax-11 1467  ax-i12 1468  ax-bndl 1469  ax-4 1470  ax-13 1474  ax-14 1475  ax-17 1489  ax-i9 1493  ax-ial 1497  ax-i5r 1498  ax-ext 2097  ax-sep 4014  ax-pow 4066  ax-pr 4099  ax-un 4323
This theorem depends on definitions:  df-bi 116  df-3an 947  df-tru 1317  df-nf 1420  df-sb 1719  df-eu 1978  df-mo 1979  df-clab 2102  df-cleq 2108  df-clel 2111  df-nfc 2245  df-ral 2396  df-rex 2397  df-rab 2400  df-v 2660  df-sbc 2881  df-un 3043  df-in 3045  df-ss 3052  df-pw 3480  df-sn 3501  df-pr 3502  df-op 3504  df-uni 3705  df-br 3898  df-opab 3958  df-mpt 3959  df-id 4183  df-xp 4513  df-rel 4514  df-cnv 4515  df-co 4516  df-dm 4517  df-rn 4518  df-res 4519  df-ima 4520  df-iota 5056  df-fun 5093  df-fn 5094  df-fv 5099  df-tpos 6108
This theorem is referenced by:  ottposg  6118  dmtpos  6119  rntpos  6120  ovtposg  6122  dftpos3  6125  tpostpos  6127
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