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Theorem relbrtpos 8053
Description: The transposition swaps arguments of a three-parameter relation. (Contributed by Mario Carneiro, 3-Nov-2015.)
Assertion
Ref Expression
relbrtpos (Rel 𝐹 → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))

Proof of Theorem relbrtpos
StepHypRef Expression
1 reltpos 8047 . . . 4 Rel tpos 𝐹
21a1i 11 . . 3 (Rel 𝐹 → Rel tpos 𝐹)
3 brrelex2 5641 . . 3 ((Rel tpos 𝐹 ∧ ⟨𝐴, 𝐵⟩tpos 𝐹𝐶) → 𝐶 ∈ V)
42, 3sylan 580 . 2 ((Rel 𝐹 ∧ ⟨𝐴, 𝐵⟩tpos 𝐹𝐶) → 𝐶 ∈ V)
5 brrelex2 5641 . 2 ((Rel 𝐹 ∧ ⟨𝐵, 𝐴𝐹𝐶) → 𝐶 ∈ V)
6 brtpos 8051 . 2 (𝐶 ∈ V → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
74, 5, 6pm5.21nd 799 1 (Rel 𝐹 → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wcel 2106  Vcvv 3432  cop 4567   class class class wbr 5074  Rel wrel 5594  tpos ctpos 8041
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-iota 6391  df-fun 6435  df-fn 6436  df-fv 6441  df-tpos 8042
This theorem is referenced by: (None)
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