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Theorem relbrtpos 8217
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 8211 . . . 4 Rel tpos 𝐹
21a1i 11 . . 3 (Rel 𝐹 → Rel tpos 𝐹)
3 brrelex2 5701 . . 3 ((Rel tpos 𝐹 ∧ ⟨𝐴, 𝐵⟩tpos 𝐹𝐶) → 𝐶 ∈ V)
42, 3sylan 589 . 2 ((Rel 𝐹 ∧ ⟨𝐴, 𝐵⟩tpos 𝐹𝐶) → 𝐶 ∈ V)
5 brrelex2 5701 . 2 ((Rel 𝐹 ∧ ⟨𝐵, 𝐴𝐹𝐶) → 𝐶 ∈ V)
6 brtpos 8215 . 2 (𝐶 ∈ V → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
74, 5, 6pm5.21nd 811 1 (Rel 𝐹 → (⟨𝐴, 𝐵⟩tpos 𝐹𝐶 ↔ ⟨𝐵, 𝐴𝐹𝐶))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wcel 2142  Vcvv 3454  cop 4588   class class class wbr 5100  Rel wrel 5652  tpos ctpos 8205
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-nul 5256  ax-pow 5322  ax-pr 5390  ax-un 7718
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-ral 3077  df-rex 3087  df-rab 3415  df-v 3456  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4481  df-pw 4557  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-iota 6477  df-fun 6523  df-fn 6524  df-fv 6529  df-tpos 8206
This theorem is referenced by: (None)
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