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Theorem brpermmodelcnv 45431
Description: Ordinary membership expressed in terms of the permutation model's membership relation. (Contributed by Eric Schmidt, 6-Nov-2025.)
Hypotheses
Ref Expression
permmodel.1 𝐹:V–1-1-onto→V
permmodel.2 𝑅 = (𝐹 ∘ E )
brpermmodel.3 𝐴 ∈ V
brpermmodel.4 𝐵 ∈ V
Assertion
Ref Expression
brpermmodelcnv (𝐴𝑅(𝐹𝐵) ↔ 𝐴𝐵)

Proof of Theorem brpermmodelcnv
StepHypRef Expression
1 permmodel.1 . . 3 𝐹:V–1-1-onto→V
2 permmodel.2 . . 3 𝑅 = (𝐹 ∘ E )
3 brpermmodel.3 . . 3 𝐴 ∈ V
4 fvex 6853 . . 3 (𝐹𝐵) ∈ V
51, 2, 3, 4brpermmodel 45430 . 2 (𝐴𝑅(𝐹𝐵) ↔ 𝐴 ∈ (𝐹‘(𝐹𝐵)))
6 brpermmodel.4 . . . 4 𝐵 ∈ V
7 f1ocnvfv2 7232 . . . 4 ((𝐹:V–1-1-onto→V ∧ 𝐵 ∈ V) → (𝐹‘(𝐹𝐵)) = 𝐵)
81, 6, 7mp2an 693 . . 3 (𝐹‘(𝐹𝐵)) = 𝐵
98eleq2i 2828 . 2 (𝐴 ∈ (𝐹‘(𝐹𝐵)) ↔ 𝐴𝐵)
105, 9bitri 275 1 (𝐴𝑅(𝐹𝐵) ↔ 𝐴𝐵)
Colors of variables: wff setvar class
Syntax hints:  wb 206   = wceq 1542  wcel 2114  Vcvv 3429   class class class wbr 5085   E cep 5530  ccnv 5630  ccom 5635  1-1-ontowf1o 6497  cfv 6498
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-nul 5241  ax-pr 5375
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-ne 2933  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-id 5526  df-eprel 5531  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506
This theorem is referenced by:  permaxsep  45434  permaxnul  45435  permaxpow  45436  permaxpr  45437  permaxun  45438  permaxinf2lem  45439  permac8prim  45441
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