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| Mirrors > Home > MPE Home > Th. List > Mathboxes > brpermmodelcnv | Structured version Visualization version GIF version | ||
| Description: Ordinary membership expressed in terms of the permutation model's membership relation. (Contributed by Eric Schmidt, 6-Nov-2025.) |
| Ref | Expression |
|---|---|
| permmodel.1 | ⊢ 𝐹:V–1-1-onto→V |
| permmodel.2 | ⊢ 𝑅 = (◡𝐹 ∘ E ) |
| brpermmodel.3 | ⊢ 𝐴 ∈ V |
| brpermmodel.4 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| brpermmodelcnv | ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ 𝐵) |
| Step | Hyp | Ref | 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 6840 | . . 3 ⊢ (◡𝐹‘𝐵) ∈ V | |
| 5 | 1, 2, 3, 4 | brpermmodel 45447 | . 2 ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ (𝐹‘(◡𝐹‘𝐵))) |
| 6 | brpermmodel.4 | . . . 4 ⊢ 𝐵 ∈ V | |
| 7 | f1ocnvfv2 7221 | . . . 4 ⊢ ((𝐹:V–1-1-onto→V ∧ 𝐵 ∈ V) → (𝐹‘(◡𝐹‘𝐵)) = 𝐵) | |
| 8 | 1, 6, 7 | mp2an 698 | . . 3 ⊢ (𝐹‘(◡𝐹‘𝐵)) = 𝐵 |
| 9 | 8 | eleq2i 2831 | . 2 ⊢ (𝐴 ∈ (𝐹‘(◡𝐹‘𝐵)) ↔ 𝐴 ∈ 𝐵) |
| 10 | 5, 9 | bitri 276 | 1 ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 = wceq 1547 ∈ wcel 2119 Vcvv 3431 class class class wbr 5072 E cep 5517 ◡ccnv 5617 ∘ ccom 5622 –1-1-onto→wf1o 6484 ‘cfv 6485 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pr 5362 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-id 5513 df-eprel 5518 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 |
| This theorem is referenced by: permaxsep 45451 permaxnul 45452 permaxpow 45453 permaxpr 45454 permaxun 45455 permaxinf2lem 45456 permac8prim 45458 |
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